28G MONOGRAPHIA CHALCIDITUM. 
African genus Manticora, represented on the plains of New 
Mexico by a cognate genus, Omus ; and on the sandy plains 
of Chili, the insects much resemble those of Africa, a very 
considerable portion of the Coleoptera being heteromerous. 
I am indebted for this information to my kind friend Mr. 
Walker, who also informs me that many insects from the 
extreme southern part of America nearly resemble our own. 
This is exactly what we should be led to infer from the nature 
of the climate, which may be called insular with as much pro- 
priety as that of our own country. 
And now, reader, farewell ! I doubt not that thou hast 
found many an error in this paper, and hast often exclaimed — 
" Tramite quo tendis majoraque viribus audes," 
or something of that sort. These I trust that thou wilt par- 
don ; and I promise that I will not often, in this way at least, 
intrude upon thee again ; perhaps never, unless those visions 
should be realized which have been to me " like the vapour of 
the plains, which the thirsty traveller thinketh to be water, but 
when he cometh to it he findeth nothing." 
Vale! 
A. 
Art. XXVII. — Monographia Chalcldltum. By Francis 
Walker. 
{Continued from i). 179.) 
the green myriads in the peopled grass." 
Family, Pteromalid^e. 
Corpus plerumque metallicolor aut nigrum : caput et thorax pubes- 
centia, quasi squamea, nunquam aut rarissime colore pallido 
variegata : caput breve, trans vers um, thoracis latitudine, mart 
ssepe magnum thorace latius : oculi mediocres, laterales : ocelli 3, 
supra verticem trigone dispositi : osoccultum: mandibula? parvsc: 
MONOGRAPHIA CHALCIDITUM. 287 
palpi plerumque simplices, marl rarissime dilatati aut fissi : 
antennae articulis 13, nonnunquam 12, rarissime 11, mart ple- 
rumque filiformes corporis longitudine, fern, plerumque clavatae 
corpore breviores, simplices, plus minusve pubescentes ; articuli 
approximati, sublineares ; l us . longus ; 2 US . cyathiformis ; clava 
triarticulata : thorax varius : mesothorax plerumque ejus fere 
totum occupans : abdomen sessile, quasi subtilissime squameum, 
supra planum, maris rotundum lineare aut spathuliforme, fern. 
ovatum sublineare aut basi latum inde ad apicem gradatim acumi- 
natum : oviductus cannula ventrali receptus, nonnumquam sub- 
exertus et vaginis duabus lateralibus reconditus : pedes mediocres, 
sub-aequales, pubescentes ; coxae parvae ; tibiae rectae, apice spinis 
armatae, marl nonnunquam dilatatae ; tarsi graeiles, articuli 1°. ad 
4 um . longitudine decrescentes ; 5 US . 4°. longior ; ungues et pulvilli 
parvi : alse plerumque amplae, pubescentes, iridescentes ; pro- 
alae nervo unico solito, cujus liumeralis ulnari longior, radialis sat 
longa stigmate terminata ; metalse nervo unico simplici, costae 
medium attingente. 
Metamorphosin in Lepldopterorum, aut rarivis Muscidum et Tenthre- 
dinidum, pupis subeunt ; nonnullae ad Cleonymum propinquse 
Coleoptera lignivora (Anobium Hylurgum et Hylesinum) diruunt. 
Mares ssepe colore laeto abdomineque flavo maculato gaudent ; 
femince obscuriores, abdomine rarissime maculato. Characteres 
quibus Chalciditum tarsis 5 articulatis familiae discrepant breviter 
memorabo. Spalangiidum caput planum ; Eurytomidum corpus 
gibbosum aut cylindricum ; Chalcididum et Leucopsidum meta- 
femora incrassata ; Torymidum et Perilampidum nervus cubitalis 
brevissimus ; Miscogasteridum abdomen petiolatum ; Ormoceridum 
antennae moniliformes ; Pteromalidum abdomen sessile et planum ; 
Cleonymidum thoracis structura propria ; Ewpelmidum et Encyr- 
tidum mesotarsi dilatati ; Aphelinidum antennae articulis paucis. 
The genus Pteromalus was named and characterized by 
Swederus in the Stockholm Transactions, where fifteen species 
are described, which, with the exception of two or three, have 
been since removed to other genera. His first species, P. 
puparum, is very abundant, and has been often described by 
entomologists : from one to two hundred specimens of it are 
found in a single chrysalis of the common white or tortoiseshell 
butterfly (Pontia Brassiccs and Vanessa Urticce). It is often 
difficult to identify the species of this family, for the males and 
females generally differ entirely in form and colour, and, like 
the Ichneumonites, the latter are either the most numerous 
I 
288 MONOGRAPHIC CHALCIDITUM. 
in individuals, or are oftener met with, being constantly 
engaged in search of chrysalises wherein to deposit their eggs. 
They comprise by far the greater part of the pentamerous 
Chalcidites. The parts of the mouth do not vary much. 
Generally the prothorax and the metathorax are very small, 
and the sutures between the parapsides and the senium of the 
mesothorax indistinct. The first and last divisions depart 
from this structure; the first resembles many of the Miscogas- 
teridcB and Ormoceridce, the last is allied to the Cleonymidce. 
The principal divisions are the following : — 
* Prothorax brevissimus, transversus. 
-\ Mesothoracis parapsides scuto discretes. 
■\\ Mesothoracis parapsides scuto fere in unum confuses. 
J Antennce W-articidatcs. 
XX Antennce 12-articulatcs. 
XXX Antennce 13- articulates. 
X Antennce articulo 3°. vix conspicuo, 4°. minimo, 5°. parro. 
X x Antennce articulo 3°. et 4°. minimis, 5°. mediocri. 
** Prothorax productus, antice angustus. 
* Prothorax brevissimus, transversus. 
j" Mesothoracis parapsides scuto discretes. 
C 13-articulatse I. Seladernia. 
Antennas < 12-articulatse. Thorax punctis ma- ( aspersus . . II. Semiotus. 
( joribus \ non aspersus. III. Systasis. 
Genus I. Seladerma/" 1 Walker. 
Fern. — Caput mediocre, thorace vix latius : mandibular elongato- 
subquadratse, paullo arcuatae, tridentatse, similes ; dens externus 
et medius acuminati ; internus latus, obtusus : maxillce elongata?, 
subarcuatae, ciliatre, quqseue interne apicem versus in lobum 
producta; palpi sat longi, 4-articulati, subfiliformes ; articulus 
l us . mediocris; 2 US . paullo longior; 3 US . 1°. aequalis: 4 US . 2°. longior 
fusiformis : men turn elongato-ovatum, basi emarginatum : labium 
breve, latum, apice ciliatum ; palpi 3-articulati, breves ; articulus 
l us . mediocris ; 2 US . brevis ; 3 US . 1°. paullo longior crassus acumi- 
" SeAas splendor, Sep/xa cutis. 
MONOGRAPHIA CHALCIDIT.UM. 28D 
natns : antennae corporis dimidio aequales aut paullo longiores, 
subclavatae, pubescentes ; articulus l lls . gracilis, filiformis ; 2 US . 
mediocris ; 3 US . et 4 US . minimi ; 5 US . et sequentes ad 10 um . gra- 
datim breviores et latiores ; clava ovata, articulis 9°. et 10°. paullo 
longior et latior : thorax ovatus, quasi plane squameus ; prothorax 
minimus, supra vix conspicuus ; parapsides convexae scuto valde 
distinctae, scutellum conicum, paraptera et epimera bene determi- 
nata ; metathorax mediocris : abdomen ovatum aut elongato- 
ovatum, fere laeve, subtus angulatum; segmentum 1 um . magnum; 
sequentia breviora, subaequalia : oviductus occultus : femora et 
tibiae gracilia : alae amplae ; nervus cubitalis fere alae apicem 
attingens ; stigma ramulum brevissimum, nonnunquam fere 
obsoletum emittens. 
Sp. 1. Sel. laetum. Fern. Viride, antennis nigris, pedibus 
rufis, femoribus fuscis, alis subfuscis. 
Viride, nitens, sparse pubescens : oculi ocellique rufi : antennae 
nigrae, corporis dimidio longiores ; articulus l us . obscure rufus, 
apice niger : thoracis segmentorum margines nonnunquam aeneo- 
virides : abdomen nonnunquam cyaneo- aut aeneo-viride, subtus 
valde angulatum : pedes obscure rufi ; coxae virides ; trochanters 
et femora fusca, hae apice basique rufa ; tarsi apice, ungues et 
pulvilli fusci ; protarsi pallide fusci : alae subfuscae ; squamulae 
fuscse ; nervi nigro-fusci ; stigma parvum ; metalarum nervi 
pallidiores. (Corp. long. 1^ — if lin. ; alar. 2\ — 3 lin.) 
Var. jd. — Minus : thoracis segmenta nonnulla cyaneo-viridia : ab- 
domen viridi-cyaneum : femora, trochanteres et protarsi rufa, 
ilia supra fusco vittata. — Species distincta. 1 
July; on grass beneath trees ; near London. 
Sp. 2. Sel. bicolor. Fem. Viride, abdomine cvpreo, an- 
tennis nigris, pedibus ntfis, alis subfuscis. 
Viride, nitens, sparse pubescens : oculi ocellique rufi : antennae 
nigrae, corporis dimidio non longiores ; articulus l us . rufus ; 2 US . 
obscure fuscus : thoracis segmentorum margines nonnulli aeneo- 
virides : abdomen cupreum, S. Iceto brevius et convexius, subtus 
valde angulatum; segmentum l um . laete viride, apice cupreum: 
pedes laete rufi ; coxae virides ; ungues et pulvilli fusci : alae sub- 
fuscae ; squamulae et nervi fusca; stigma parvum; metalarum 
nervi pallidiores. (Corp. long. 1| — 1| lin. ; alar. 2\ — 2^ lin.) 
June, July ; on grass beneath trees ; near London. 
NO. III. vol. n. p P 
I 
290 MONOGRAPHIA CHALCIDITUM. 
Sp. 3. Sel. convexum. Fem. Cyaneo-viride, antenms nigris, 
pedibus fuscis, femoribus viridibus, alls subhyalinis. 
Cyaneo-viride, nitens, sparse pubescens : caput viride : oculi ocelli- 
que run : antennae nigra?, corporis dimidio vix longiores ; articulus 
l us . viridis : mesothoracis parapsides et scutum antice purpurea : 
abdomen cyaneo-viride, subtus valde angulatum, eodem longitudine 
quod S. bicolor ; discus seneo-viridis ; segmentum 1 um . purpureo- 
cyaneum : pedes fusci ; coxa? et femora viridia, ba? apice basique 
rufa ; tibia? basi et subtus, metatibia? fere totae, rufa? ; meso- et 
metatarsi rufo-fusci, apice fusci : ala? subhyalinae ; squamulae. et 
nervifusca; stigma mediocre ; metalarumnervipallidiores. (Corp. 
long. 1| lin. ; alar. 2h lin.) 
July ; on grass beneath trees ; near London. 
Sp. 4. Sel. breve. Fem. Aureo-viride, antenms nigris, 
pedibus rufis, femoribus basi fuscis, a/is hyalinis. 
Praecedentibus brevius et latius, laete aureo-viride, sparse pubescens : 
oculi ocellique rufl : antenna? nigra?, corporis dimidio paullo 
longiores ; articulus l us . viridis : abdomen subtus angulatum : 
pedes run" ; coxa? virides ; femora basi fusca ; meso- et metatarsi 
apice, ungues et pul villi fusci: ala? hyalina? ; squamula? fusca?; 
nervi nigro-fusci ; stigma mediocre ; metalarum nervi pallidiores. 
(Corp. long. \\ lin. ; alar. 2| lin.) 
July ; on grass beneath trees ; near London. 
Genus II. — Semiotus, 11 Walker. 
Corpus pubescens : caput mediocre, thorace vix latius : mandibular 
subquadrata?, fere recta?, similes, dentibus 3 parvis acutis armata? ; 
dens internus latus : maxilla? elongata?, subarcuata? quaeque 
interne apicem versus in lobum producta ; palpi 4-articulati, breves, 
ad apices gradatim crassiores ; articulus l us . et 2 US . mediocres, 
suba?quales ; 3 US . paullo longior ; 4 US . 3°. paull6 longior, elongato- 
ovatus : mentum breve, conicum : labium parvum, quasi fissum ; 
palpi 3-articulati, brevissimi, filiformes ; articuli subaequales : 
antenna? 12-articulatae, mari fere filiformes corporis dimidio 
longiores, fem. plus minusve clavata? corporis dimidii longitudine 
aut paullo breviores ; articulus l us . gracilis, filiformis ; 2 US . brevis; 
5™. et sequentes ad 9 um . lineares longitudine decrescentes ; mari 
b (TTineicoTos, signatus. 
MONOGRAPHIA CHALC1D1TUM. 291 
clava sublinearis, articulis 8°. ct 9°. paullo longior et latior ; fern. 
clava elongato-ovata, articulis 8°. et 9°. latior et paullo longior : 
thorax ovatus, quasi plane squameus, punctis majoribus aspersus : 
prothorax minimus, supra vix conspicuus : mesothorax magnus ; 
parapsides bene determinatae, scuto distincta? ; paraptera et 
epimera parva ; scutellum apice subacuminatum : metathorax 
mediocris : mart abdomen elongato-ovatum, fere laeve ; segmentum 
l mn . magnum ; sequentia breviora, subasqualia : sexualia exerta, 
abdominis dimidio nonnunquam vix breviora : fern, abdomen 
ovatum, plus minusve elongatum et acuminatum, subtus angu- 
latum, non compressum : pedes graciles ; tibiae simplices : ala? 
mediocres ; nervus radialis cubitali paullo longior, humeralis 
prope apicem ramulum rejiciens brevissimum sed bene determi- 
natum ; stigma ramulum brevissimum nonnunquam fere obsoletum 
emittens. 
Sp. 1. Sem. mundus. Mas et Fem. Viridis, pedibus rufis, 
alls hyalinis. 
Mas. — Viridis : caput postice aeneo-viride : oculi ocellique rufi : 
antennae nigra? : abdomen viridi-cupreum, basi et utrinque viride : 
sexualia nigra, apice fusca : pedes ruii ; coxae virides ; femora 
basi nigra ; tarsi pallide rufi, apice necnon ungues et pulvilli 
fusci ; protarsi pallide fusci : aloe hyalinae ; squainula? et nervi 
pallide fusca : stigma minimum ; metalarum nervi fiavi. 
Fem. — Antennas clavata?, corporis dimidii longitudine ; articulus 
l us . fiavus, apice et supra nigro-fuscus : abdomen nigro-viride, 
elongato-ovatum, basi cupreo-viride nitentius, subtus angulatum 
. aeneum, apice paullo attenuatum : pedes pallide rufi ; coxae 
virides ; meso- et metatarsi fiavi ; ungues et pulvilli fusci. 
(Corp. long. l\— 1| lin. ; alar. If— 2 lin. 
July; on grass beneath trees ; near London. 
Sp. 2. Sem. clarus. Mas et Fem. Prcecedenti minor, fem. 
abdomine longiore, alarum nervis obscunoribus. 
Mas. — Viridis : oculi ocellique rufi : antennas nigra : abdomen 
cupreum ; latera et apex viridia : sexualia nigra, apice fusca : 
pedes rufi ; coxae virides ; femora basi nigra ; meso- et metatarsi 
fiavi ; ungues et pulvilli fusci : alse hyalinae ; nervi et squamidae 
fusca; stigma parvum ; metalarum nervi pallidi. 
Fem. — Antenna? clavata?, corporis dimidio breviores : abdomen cy- 
aneo-viride, elongato-ovatum, subtus angulatum, apice attenuatum : 
292 
MONOGRAPIIIA CHALCIDITUM. 
femora basi et coxae viridia : meso- et metatarsi apice fusci. 
(Corp. long. 1— li lin. ; alar. H— If lin.) 
Far. ft. — Mas, aeneo-viridis. 
Far. y. — Mas, meso- et metafemora nigra, apice rufa ; meso- et 
ruetatibiae apice pallide fuscae. 
June and August; on grass beneath trees ; near London. 
Sp. 3. Sem. tarsalis. Mas et Fem. Viridis, pedibus fuscis, 
tarsis pattidis, alts hyalinis. 
Mas. — Viridis : oculi ocellique rufl : antennae nigrae : abdomen 
cupreum, basi apice et utrinque viride : sexualia nigra, apice 
fusca : pedes rufi ; coxae virides ; femora basi nigra ; metafemora 
fere omnino nigra ; metatibiae fuscae, basi rufae ; tarsi straminei, 
apice necnon ungues et pulvilli fusci ; protarsi pallide fusci : alae 
hyalina? ; squamulae et nervi fusca ; stigma parvum ; metalarum 
nervi pallidiores. 
Fem. — Antennae subclavatae, corporis dimidio vix longiores : ab- 
domen viridi-cupreum, elongato-ovatum, apice paullo acuminatum : 
femora, meso- et metatibiae rufa, fusco cingulata ; meso- et 
metatarsi flavi, apice fusci. (Corp. long. \ — 1 lin. ; alar. 1 — 1| 
lin.) 
Var. ft. — Mas, mesothoracis scutum viridi-aeneum. 
Far. y. — Mas, pro- et mesotibiae pallide fuscae ; metatibiae obscu- 
riores. 
Far. c. — Mas, femora omnia nigra, apice rufa ; meso- et metatibiae 
fuscae. 
Far. t. — Mas, metafemora omnino nigra; tibiae nigro-fuscae ; pro- 
tibise fuscae ; meso- et metatarsi flavi, apice fusci. 
Far. '(. — Mas, protarsi rufi ; meso- et metatarsi flavi. 
Far. r). — Mas, abdomen purpureo-cupreum : tibiae nigree ; protibiae 
rufas, fusco cingulatae. 
Far. 6. — Mas, meso- et metatarsi pallide fusci. 
July ; on grass beneath trees ; near London. June ; 
Windsor Forest. 
Sp. 4. Sem. Scoticus. Fem. JEneo- viridis, pedibus riifis, 
alls subhyalinis. 
^Eneo-viridis : caput obscure viride : oculi ocellique rufi : antennae 
nigrae ; clava articulo 9°. multo latior : thoracis puncta majora 
vix conspicua : abdomen viride elongato-ovatum, basi aeneo-viride 
MONOGRAP1IIA CHALCIDITUM. 293 
nitentius, subtus angulatum aeneum, apice non attenuatum : pedes 
rufi ; coxae virides ; femora fusco cingulata ; ungues et pulvilli 
fusci : alee subhyaliiiae ; nervi et squamulae pallide fusca ; stigma 
minimum; metalarum nervi pallidiores. (Corp. long. \\ lin. ; 
alar. 2 lin.) 
New Lanark, Scotland. 
Sp. 5. Sem. varians. Mas et Fem. Viridis, prcecedenti 
brevior, pedibus fuscorujis, alls sitbfuscis. 
Mas. — Obscure viridis : oculi ocellique rufi : antennas nigra? : 
abdomen nigro-cupreum, basi et utrinque viride: sexualia nigra, 
apice fusca : pedes fusci ; coxae virides ; trochanteres, femora 
apice, tibiae basi tarsique flava ; tarsi basi et apice, ungues et 
pulvilli fusci : alae subfuscae ; squamulae et nervi fusca ; stigma 
parvum ; metalarum nervi pallide fusci. 
Fem. — Viridis : antennae clavatae : abdomen nigro-viride, elongato- 
ovatum, basi aeneo-viride, subtus angulatum seneum, apice vix 
attenuatum : pedes pallide rufi ; coxae virides ; femora basi 
viridia ; meso- et metatarsi flavi ; ungues et pulvilli fusci. (Corp. 
long, f — l;j lin. ; alar, lg — 2 lin.) 
Var. (3. — Mas, meso- et metatarsi basi flavi. 
Var. y — Mas, femora nigro-fusca, apice flava; tarsi flavi, apice 
fusci. 
Var. c. — Mas. protibiae rufae ; tarsi flavi, apice fusci ; protarsi 
pallide fusci. 
Var. £. — Fem. abdomen omnino aeneo-viride. 
Var. £. — Fem. protarsi fusci. 
Var. rj. — Fem. thorax viridi-aeneus : tarsi omnes pallide rufi. 
Var. 6. — Fem. abdomen cupreum, viridi marginatum : antennae 
articulo 1°. basi rufo. 
June ; on grass beneath trees ; near London. July ; near 
Clermont, Auvergne. 
Sp. 6. Sem. prasstans. Mas et Fem. JEneo-viridis, pedibus 
rufis aut flavis, alts sitbfuscis, S. Scotico clava angustiore 
S. variante alts lalioribus discrepans. 
Mas. — Viridis : oculi ocellique rufi : antenna? nigrae : caput postice 
et mesothoracis scutum antice aeneo-viridia : abdomen cupreum, 
basi et utrinque viride : sexualia nigra, apice fusca : pedes rufi ; 
coxae virides ; femora basi nigra ; meso- et metatibiae et protarsi 
2 ( Ji MONOGRAPHIA CHALCIDITUM. 
pallide fusca ; ungues et pulvilli fusci : alae subfuscae ; nervi et 
squamulae nigro-fusca ; stigma parvum ; metalarum nervi pallidi. 
Fein. — Antenna? clavatee : abdomen viride, ovatum, basi aeneo- 
viride nitentius, subtus paullo angulatum, apice acuminatum sed 
vix attenuatum : femora basi viridia ; tibiae et protarsi rufa ; meso- 
et metatarsi flavi : pro-alarum nervi fusci. (Corp. long. 1 — \\ 
lin. ; alar. 1| — 2 lin.) 
Far. /3. — Mas, viridis : abdomen cupreum, basi aeneo-viride : tibiae 
omnes et protarsi rufa ; meso- et metatarsi flavi. 
Far. y. — Mas, femora et protarsi fusca, ilia apice flava. 
Far. h. — Mas, Far. /3. similis: abdomen aeneum, basi viride niten- 
tius : meso- et metatarsi apice fusci. 
Far. i. — Mas, abdominis discus obscure cupreus : pedes flavi ; 
coxae virides ; femora basi nigra ; meso- et metatarsi straminei, 
apice necnon ungues pulvilli et protarsi omnino fusci. 
July; on grass beneath trees ; near London. June; New 
Forest, Hampshire. 
Sp. 7. Sem. diversus. Mas et Fem. Viridis, pedibus rujis, 
alisfuscis, S. variante et praestante fem. abdomine longiore 
et angustiore discrepans. 
Mas. — Viridis : oculi ocellique run : antennae nigrae, graciles : 
abdomen basi nitentius : sexualia nigra, apice fusca : pedes run ; 
coxae virides ; femora basi fusca ; meso- et metatarsi apice, 
ungues et pulvilli fusci : alae fuscae ; squamulae et nervi obscu- 
riora ; stigma parvum ; metalarum nervi pallidi. 
Fem. — Antennae clavatse, corporis dimidio breviores : abdomen 
aeneo-viride, elongato-ovatum, angustum, subtus paullo angu- 
latum, apice acuminatum et attenuatum : oviductus rufus : pedes 
rufi ; coxae et femora basi viridia ; meso- et metatarsi pallide rufi ; 
ungues et pulvilli fusci. (Corp. long. 1 — 1^ lin. ; alar. 1 J — If 
lin.) 
Far. /3. — Mas, femora basi nigra ; protarsi pallide fusci. 
Far. y. — Fem. antennae articulo 1°. rufo : femora omnino rufa. 
Far. 8. — Fein, aeneo-viridis : antennae articulo 1°. fusco : abdomen 
aeneum. 
Far. e. — Fem. Far. c. similis, viridis : mesothoracis scutellum et 
metathorax viridi-aenea : abdomen aeneo-viride. 
Far. '(. — Fem. Far. a. similis : abdomen obscure viride, basi aeneo- 
viride nitentius : tarsi apice fusci. 
June ; on grass beneath trees ; near London. — Jersey. 
MONOGRAPHIA CIIALCIDITUM. 295 
Sp. 8. Sem. quadratus. Mas et Fern. Viridis, pedibus 
rtijxs, al'is fuscis, specibus 4 prcecedentibus alls angusti- 
oribus discrcpans. 
Mas. — Viridis : oculi ocellique rufi : antennae nigrae : abdomen 
cupreum, basi viride : sexualia nigra, apice fusca : pedes rufi ; 
coxae virides ; femora nigra, apice rufa ; profemora rufa, basi 
nigra; protarsi pallide fusci ; ungues et pul villi fusci : alae fuscae, 
breves, angustse ; squamulae et nervi obscuriora ; stigma parvum ; 
metalarum nervi pallidi. 
Fern. — Antennae clavatae, corporis dimidii longitudine ; articulus 
l us . rufus, apice fuscus : metathorax viridi-aeneus : abdomen aeneo- 
viride, ovatum, basi nitentius, subtus angulatum, apice acuminatum 
non attenuatum : femora et protarsi omnino rufa. (Corp. long, 
f— 1| lin. ; alar. 1—1 A lin.) 
Far. /5. — Mas, meso- et metatibiae supra pallide fuscae. 
Jar. y. — Fern, antennae articulo 1°. nigro, basi fusco : abdomen 
viride, basi aeneo-viride nitentius : femora basi viridia. 
Far. c. — Fern, caput et thorax aeneo-viridia ; antennae articulo 
1°. nigro. 
Far. e. — Fern, caput et thorax cupreo nitentia: antennae articulo 
1°. nigro, basi fusco : abdomen apice aeneum : meso- et metatibiae 
rufo-fuscae. 
Far. '(. — Fein, abdomen cupreum, basi aeneo-viride nitentius. 
Far. i). — Fern, thoracis latera et abdomen viridi-aenea. 
Far. 6. — Fern, viridis : antennae totae nigrae, femora basi viridia. 
June ; on grass beneath trees ; near London. 
Sp. 9. Sem. masrens. Mas. Obscure viridis, pedibusjlavis, 
alis griseis. 
Obscure viridis, longus, sublinearis : oculi ocellique rufi : antennae 
nigrae : sexualia nigra, apice fusca : pedes flavi ; coxae virides ; 
femora basi fusca ; ungues et pulvilli fusci : alae griseae ; squamulae 
et nervi obscure fusca ; stigma parvum ; metalarum nervi pallidi. 
(Corp. long. 1 — \\ lin. ; alar. \\ — 1| lin.) 
Far. /3. — iEneo-viridis : femora nigra, apice flava ; tibiae pallide 
fuscae. 
Far. y. — Femora nigra ; tibiae fuscae, basi flavae ; tarsi apice fusci. 
Far. c. — Tibiae nigro- fuscae ; protibiae et protarsi pallide fusca. 
Var. e. — Pedes rufi ; femora basi et coxae viridia ; meso- et meta- 
29G MONOGRAPHIA CHALCIDITUM. 
tibiae nigro-fuscae, basi rufae ; mcso- et metatarsi pallide flavi, 
apice rufi. 
June; on grass ; Windsor Forest, New Forest. September; 
near Linton, North Devon. 
Genus III. Systasis, c Walker. 
Corpus crassum, breve : caput mediocre, thoracis latitudine : mandi- 
bular breves, subquadratse, similes, dentibus 3 vix acutis armatse ; 
dens externus et medius parvi, internus minimus : maxilloe 
elongatse, subarcuatae, quaeque interne apicem versus in lobum 
producta ; palpi 4-articulati, breves, ad apices gradatim crassiores ; 
articulus l us . mediocris ; 2 US . paullo longior ; 3 US . 1°. aequalis ; 
4 US . 2°. paullo longior elongato-ovatus : mentum conicum : labium 
parvum, quasi fissum ; palpi 3-articulati, brevissimi, crassi, sub- 
fili formes ; articuli subaequales, 3 US . acuminatus : antennae 12- 
articulatae, mart subfiliformes, fern, clavatae crassiores, corporis 
dimidio vix longiores ; articulus l us . linearis, lnngitudine triens ; 
2 US . mediocris ; 5 US . et sequentes ad 9 um . subaequales ; clava 
elongato-ovata, articulis 8°. et 9°. longior et fern, latior : thorax 
convexus, brevis, ovatus : pro- et metathorax minimi, supra vix 
conspicui : mesothoracis scutum, scutellum, parapsides et paraptera 
bene determinata : abdomen breve, ovatum aut fere rotundum, 
supra planum, fern, subtus carinatum et angulatum, mari angus- 
tius, apice vix acuminatum ; segmentum l um . magnum ; sequentia 
breviora, sub-sequalia : oviductus non exertus : pedes graciles, 
simplices : alse lata:, sat longae ; nervus humeralis ulnari longior 
ramulum rejiciens nullum, cubitalis radiali vix brevior stigmate 
rotundo terminatus : metalae nervo unico simplici solito. 
Sp 1. Syst. encyrtoides. Mas et Fem. Viridis, antennis 
nigris, pedibus viridibus, tarsis fiavis aut fuscis, alls 
hyalinis, nervo humerali ramulum rejiciente nullum. 
Mas. — Laete viridis, nitens, quasi minute squameus : oculi ocellique 
rufi : antennae nigras ; articulus l us . viridis : abdomen fere laeve, 
basi seneo-viride nitentius : pedes virides ; trochanteres nigro-fusci ; 
genua rufa ; tarsi flavi, apice fusci ; articulus 5 US ., ungues et 
pulvilli nigro-fusci ; protarsi fusci : alae hyalinse ; nervi et 
squamulae nigro-fusca ; stigma parvum ; metalarum nervi pallidi. 
Fern. — Mesothoracis scutellum cupreo-vittatum : abdomen basi 
c ffJaraim, coheerentia. 
MONOGRAPHIA CHALCIDITUM. 297 
cupreo-viride ; segmenta basi asnea : tarsi flavi ; protarsi rufi ; 
omnium articulus 5 US . nigro-fuscus. (Corp. long. | — 1^ lin. ; 
alar. 1^—2 lin.) 
Var. (i. — Fern, scutelli vitta vix conspicua : abdomen basi aeneo- 
viride : protarsi fusci. 
Var. y. — Fern, thorax cupreo - viridis ; segmentorum margines 
cuprei : tarsi omnes fusci ; metatarsi articulo 1°. basi flavo. 
Far. d. — Fern, thorax omnino viridis : abdomen cyan eo- viride, basi 
viride : profemora apice et protibise rufa, hee supra fusco vittatae. 
Far. e. — Fern, abdomen cupreum, utrinque et subtus viride : protarsi 
fusci. 
Far. '(. — Fern, viridi-cyaneus : caput viride : abdominis discus 
cupreus : genua et tarsi omnes flava, hi apice fusci. 
Var. rj. — Fern. Far. £. similis : protibiae et protarsi fusca : alarum 
nervi pallide fusci. 
August ; on grass beneath trees ; near London. Sep- 
tember ; Isle of White . ^ If \^t • 
Sp. 2. Syst. tenuicornis. Mas et Fem. Viridis, prcecedenti 
angustior, antennis nigris, pedibus fuscis aut viridibus, 
alis griseis, nervo humerali ramulum rejiciente brevis- 
simum, 
Mas. — Obscure viridis, quasi minute squameus : oculi ocellique 
rufi: antennae nigrae ; articulus l us . viridis: abdomen obscure 
aeneo-viride, angustum, fere laeve : sexualia nigra : pedes nigro- 
fusci : coxae et femora viridia ; protibiae et protarsi fusca ; meso- 
et metatarsi pallide fusci, apice obscuriores, subtus flavi : alas 
griseae ; squamulae et nervi fusca ; stigma parvum ; metalarum 
nervi pallidi. 
Fem. — Abdomen obscure viride, ovatum ; discus cupreo-viridis : 
pedes virides ; trochanteres nigri ; tarsi flavi, apice fusci ; pro- 
tarsi, ungues et pulvilli fusci. (Corp. long. | — 1 lin. ; alar. 
li— If lin.) 
June; on grass; Windsor Forest. 
■\"\ Mesothoracis parapsides scutofcre in unum confuses. 
J Antennce 11- articulates. 
Genus IV. Eunotus/ Walker. 
Mas. — Corpus convexum, crassum, latum, contractum, quasi squa- 
meum, vix pubescens : caput maximum, thorace latius, breve : 
'' e5 ben£, vwros dorsum. 
NO. III. VOT,. II. Q Q 
X98 MONOGRAPHIA CHALCIDITUM. 
antennas 11-articulatag, clavatce, thorace breviores ; articulus l us , 
linearis, gracilis ; 2 US . mediocris ; 3 US . et 4 US . vix conspicui ; 
5 US . et sequentes ad 8 um . gradatim longiores et latiores ; clava 
articulis 8°. et 9°. mult6 longior et latior, apice quasi truncata : 
thorax fere quadratus : prothorax parvus, brevissimus : meso- 
thoracis parapsidum suturae vix conspicuae ; paraptera et epimera 
bene determinata ; scutellum fere rotundum, postice subproductum 
et abdominis basin attingens : metathorax supra vix conspicuus : 
abdomen fere quadratum, paullo longius quam latum, quasi 
subtilissime squameum ; segmentum l um . maximum, reliqua 
omnino obtegens et ultra abdominis apicem productum : pedes 
simplices, graciles, breves: ala? breves, angustse : nervus ala. dimidio 
brevior; humeralis longus ; ulnaris brevis ; cubitalis radiali longior 
et angulum plerisque hujus familiae acutiorem fingens. 
Sp. 1. Eun. cretaceus. Mas. Nigro-viridisyantennisfulvo- 
fuscis, pedibusjuscis, alls subfuscis. 
Nigro-viridis, obscurus : oculi ocellique rufo-f'usci : antennae fulvo- 
fuscae ; articulus 2 US . obscure fuscus : abdomen quasi subtilisime 
squameum, basi laeve : pedes nigro-fusci ; coxae virides ; tibiae 
pallide fuscae ; genua tarsique fiava, horum articulus 5 US . ungues 
et pulvilli fusci : alas subfuscae ; squamulas et nervi fusca ; stigma 
minimum. (Corp. long. \ lin. ; alar, f lin.) 
Fern. — Aptera. 
June and September ; on chalk cliffs in the Isle of Wight. 
I found one specimen of the female in the same situation, but 
have since lost it. 
J J Antennce \'2-articulatce. 
, j- rr, ( latUS V. M ERAPORUS. 
i mediocris. 1 horax apice < , n ,» T „_ 
,„ 1 < angustus . . . VI. Metastenus. 
Clava < v ° 
%_ maxima VII. Metopon. 
Genus V. — Meraporus, 6 Walker. 
Corpus breve, vix pubescens : maris caput magnum thorace latius, 
fern, thorace vix latius : mandibular 4-dentatas, subquadratse, fere 
rectas, intus indentatae, similes ; dentes obtusi, parvi, subsequales : 
maxillas elongatas, subarcuatae, apice angustae, acuminata; ; palpi 
4-articulati, mediocres, filiformes ; articulus 2 ,1S . 1°. paullo longior; 
* fxtpos pars, &tropos egenus. 
MONOGRAPHIA CHALCIDITUM. 299 
3 US . 1°. brevior; 4 US . linearis, 2°. et 3°. longior, apice acumina- 
tus : mentum elongato-ovatum, postice angustius : labium par- 
vum, rotundatum, integrum, antice ciliatum ; palpi 3-articulati, 
breves, crassi ; articulus 2 US . brevissimus ; 3 US . acuminatus : an- 
tennae corporis dimidii longitudine, clavatae ; articulus l us . gracilis, 
linearis ; 2 US . elongato-cyathiformis, mediocris ; 5 US . et sequentes 
ad 9 um . gradatim latiores ; clava ovata aut elongato-ovata, plana, 
articulis 8°. et 9°. latior et paullo longior : tborax ovatus, 
abdomine longior : protborax et metathorax parvi, ille brevis : 
mesothoracis parapsides scuto in unum confusas ; paraptera et 
epimera bene determinata : maris abdomen brevissimum, ro- 
tundum ; segmentum l™ 1 . maximum, ejus fere dimidium occupans ; 
reliqua brevissima : fern, abdomen ovatum, thorace vix brevius, 
subtus paullo carinatum, apice acuminatum et sparse pilosum ; 
segmentum l um . magnum ; sequentia breviora, subaequalia : 
pedes simplices, graciles : alse brevissimae aut mediocres ; nervus 
humeralis ulnari multo longior, ramulum rejiciens nullum ; 
cubitalis radiali paullo brevior ; stigmatis ramulus fere obsoletus. 
Sp. 1. Mer. graminicola. Mas et Fern. Viridi-ceneus, an- 
tennis aut jiavis aut fuscis (mas) aut nigris (fern.), pedibus 
jlavis aut fuscis, alts vix ullis. 
Mas. — Viridis, quasi subtile squameus : oculi ocellique rufi : 
antennae flavae ; articulus 2 US . pallide fuscus ; clava ovata : meso- 
thoracis scutellum seneo-viride : abdomen viridi-aeneum, sub- 
tilissime squameum, glabrum, basi viride : pedes flavi ; coxae 
virides ; tarsi pallide flavi ; articulus 5 US ., ungues et pulvilli fusci : 
alae hyalinas, brevissimae, volatu ineptse. 
Fern. — Obscure viridis : antennae nigrae ; articulus l us . pallide 
rufus : abdomen viridi-aaneum, apice sparse pilosum : pedes pallide 
rufi ; coxae aeneae ; meso- et metatarsi flavi, apice necnon ungues 
et pulvilli fusci. (Corp. long. ^ — f lin.) 
Far. @. — Mas, antenna?, articulis 3°. 4°. et 5°. pallide fuscis : thorax 
et abdomen omnino viridi-aenea. 
Var. y. — Mas, antennae articulis 3°. et 4°. pallide fuscis. 
Var. o. — Mas, antennae articulo 1°. fusco. 
Var. s. — Mas, aeneus : caput aeneo-viride : antennae rufo-fuscae ; 
articuli 1°. ad 5 um . fusci: metathorax viridis: femora fusca. 
Var. '(. — Mas, viridi-asneus : caput, thorax antice et abdomen basi 
viridia : antennae fuscae ; clava rufa : femora fusca. 
Var. t). — Mas, omnino aeneus. 
300 MONOGRAPHIA CHALCIDITUM. 
Far. 6. — Mas, caput et thorax viridia : abdomen aeneo-viride, basi 
viride : protarsi omnind pallide flavi. 
Far. i. — Mas, caput viride : thorax viridi-aeneus : abdomen cupreo- 
aeneum. 
Far. k. — Mas, aeneus : protarsi articulo 5°. pallide fusco. 
Far. X. — Mas, aeneus : femora pallide fusca. 
Far. fx. — Mas, aeneo-viridis : abdomen cupreo-aeneum, basi viride : 
femora pallide fusca. 
Far. v. — Mas, aeneo-viridis: antennae fuscee ; articulus l us . fiavus, 
apice fuscus ; 2 US . nigro-fuscus : abdomen cupreo-aeneum, basi 
asneo-viride. 
Far. £. — Mas, antennae articulis 1°. et 2°. fuscis : femora fusca, 
apice flava. 
Far. o. — Fern, caput et thorax aeneo-viridia : abdomen cupeo-aeneum : 
femora basi fusca. 
Far. ir. — Fern, antennae articulo 1°. apice fusco. 
Far. p. — Fern, femora viridia ; tibiae pallide fuscae. 
Far. cr. — Fern, femora et tibiae pallide fusca. 
Far. r. — Fern, obscure aeneus : abdomen basi cupreum. 
Far. v. — Fern, obscure viridis : antennae articulo 1°. fusco : abdomen 
basi aeneo-viridi et nitentius : femora et tibiae supra pallide fusca. 
Far. <j>. — Fern, seneus : caput viride : femora et tibiae pallide fusca. 
Far. x.—Fem. aeneus : antennae articulo 1°. obscure fusco. 
Far. i//. — Fern, viridis : mesothoracis scutellum et abdomen apice 
aenea. 
Far. w — Fern, antennae nigro-fuscae. 
Far. act. — Fern, aeneo-viridis : thorax aeneus. 
Far. /3(3. — Fern, omnind viridis : antennae articulo 1°. nigro-fusco. 
August and September ; on grass in fields near London. 
September ; Isle of Wight, Westmoreland and Cumberland ; 
New Lanark, Scotland. 
Sp. 2. Mer. alatus. Mas. SEneo-viridis, antennis pedi- 
busquejlavis, alts subjlavescentibus. 
Viridis, parilm nitens : oculi ocellique run" : antennae flavae ; arti- 
culus 2 US . pallide fuscus ; clava elongato-ovata : mesothoracis 
scutellum, paraptera et epimera viridi-aenea : abdomen aeneo- 
viride, nitens, glabrum, basi laete viride ; sexualia flava : pedes 
flavi ; coxae virides ; tarsi apice, ungues et pulvilli fusci ; meso- 
et metarsi pallide flavi : alae hyalinae, amplae, paullo flavescentes ; 
squamulae et nervi fulva ; stigma parvum. (Corp. long. \ — f 
lin. ; alar, f — J lin.) 
MONOGRAPHIA CHALCIDITUM. 301 
Far. /3. — Abdomen viridi-cupreum, basi laste viride. 
Far. y. — jEneo-viridis : antennae articulis 1°. ad 4 um . fuscis: ab- 
domen basi et metathorax viridia. 
Far. $. — Antennae fulvae ; articulus 2 US . obscurior. 
Far. e. — Viridi-asneus : antennas omnino flavas : abdomen basi 
viride. 
Far. £. — Viridi-asneus : abdomen basi et metathorax viridia. 
Far. rj. — Abdomen basi cyaneo-viride. 
Far. 6. — Antennas omnino flavas : abdomen cupreum, basi apiceque 
viride. 
far. t. — Caput et thorax obscure viridia: antennae articulis 1°. ad 
4 um . fuscis. 
Far. k. — iEneo- viridis : abdomen viridi-asneum, basi viride. 
Far. X. — Laste viridis : abdomen viridi-aeneum, basi viride. 
Far. fi. — Var. praecedenti similis : antennae articulis 1°. ad 4 um . 
fuscis. 
July to September; on grass in fields; near London. 
Sp. 3. Mer. exiguus. Mas. Viridis, prcecedenti multb gra- 
cilior, antennis fuscis, pedibus fulvis, alis subfulvescen- 
tibus. 
Viridis : oculi ocellique rufi : antennas fuscas ; articulus l us . basi 
2 us que apice flavi : pedes fulvi ; coxae virides ; femora tibiasque 
apice et protibias omnino flava ; tarsi apice, ungues et pulvilli 
fusci : alas subfulvas, amplas ; squamulas et nervi obscuriora ; 
stigma parvum. (Corp. long. \ lin. ; alar, § lin.) 
October ; on grass in fields ; near London. 
Genus VI. — Metastenus/ Walker. 
Fern. — Corpus sparse pubescens : caput thorace paulld latius : man- 
dibulas 4 dentatas, arcuatae, similes, basi angustas ; dentes acumi- 
nati ; extemus et 2 US . magni, discreti ; 3 US . et internus parvi, basi 
connecti : maxillae elongatae, subarcuatas, acuminata?, apice 
angustas ; palpi 4-articulati, filiformes ; articulus l us . et 3 US . sub- 
asquales ; 2 US . paullo longior ; 4 US . 2'. longitudine, apice acumi- 
natus : mentum ovatum : labium minutum, breve, quasi fissum ; 
palpi 3-articulati, breves, crassi ; articulus 2 US . brevissimus ; 
3 US . r. longitudine, apice acuminatus : antennae 12-articulatas, 
subfusiformes, corporis dimidio breviores ; articulus l us . linearis, 
fj.tTci post, ffrtvos angustus. 
302 MONOGRAPHIA CHALCIDITUM. 
gracilis ; 3 US . et 4 US . vix discernendi : 5 lls . et sequentes ad 9 U1 ". 
lati approximati, subaequales ; clava conica, acuminata, articulis 
8°. et 9°. vix longior : thorax brevis, paullo longior quam latus ; 
prothorax brevissimus ; mesothoracis parapsidum suturae indis- 
tinctae, paraptera et epimera magna, scutellum fere conicum : 
metathorax apice angustus : abdomen ovatum, tborace paullo 
longius, subtus convexum, basi abrupte angustius, apicem versus 
gradatim acuminatum ; segmentum l um . magnum, ejus fere 
trientem occupans ; reliqua breviora, subaequalia : oviductus 
apicem non transiens : pedes graciles, simplices : alae mediocres ; 
nervus cubitalis longus, radialis fere alae apicem attingens ; stigma 
ramulum brevissimum vix conspicuum emittens. 
Sp. 1. Met. concinnus. Mas. Cyaneus, antennis fuseis, 
pedibus fulvis , alls hyalinis. 
Cyaneus, obscurus : oculi ocellique rufi : antennae pallide fusca?, 
basi obscuriores, subtus flavae : abdomen cupreo-cyaneum, nitens, 
glabrum, basi viride, apice sparse pilosum : pedes fulvi ; coxa 
cyanese ; femora et tibiae apice tarsique flava ; horum articulus 
5 US ., ungues et pul villi fusci ; protarsi articulo 1°. fulvo : alae 
hyalinae ; squamulae et nervi fulva; stigma parvum. (Corp. long. 
| lin. ; alar. 1 lin.) 
Far. /3. — Antennae omnino fuscae. 
August ; on grass in fields : near London. 
Genus VII. — Metopon, s Walker. 
]? em , — Sparse pubescens, quasi minute squameum : caput maximum, 
thorace multo latius : antennae 12-articulatae, clavatae, corporis 
dimidio longiores, apices versus crassissimae ; articulus l us . 
gracilis, linearis ; 2 US . brevis ; 5 US . et sequentes ad 9 um . longitu- 
dine subaequales, latitudine crescentes ; clava maxima, elongato- 
ovata, apice acuminata, articulis 8°. et 9°. mult6 latior et longior : 
thorax brevis, fere rotundus : prothorax minimus, supra vix 
conspicuus : mesothorax magnus ; parapsides scuto in unum 
confusae ; paraptera et epimera bene determinata ; scutellum 
convexum, fere rotundum : metathorax mediocris : abdomen 
parvum, angustum, compressum, laeve, thorace vix longius, supra 
planum lateribus elevatis, subtus carinatum ; segmenta sub- 
aequalia : pedes graciles, simplices : alae mediocres ; nervus 
* [.Ututtov irons. 
MONOGRAPHIA CHALCIDITUM. 303 
humeralis ramulum rejiciens nullum ; cubitalis radiali paullo 
brevior, stigmate rotundato terminatus. 
Sp. 1. Meto. atrum. Fem. Atrum, pedibus rufo-Juscis, 
antennis femoribusque nigris, alls fuscis. 
Atrum, obscurum : oculi ocellique rufo-fusci : antennae nigra? ; 
articuli l us . 3 US . et 4 US . rufi ; 2 US . fuscus : abdomen aeneo-atrum, 
nitens, fere glabrum : pedes rufo-fusci ; coxae et femora nigra ; 
tarsi flavi, apice fusci : alae fuscae ; squamulas et nervi obscuriora ; 
stigma parvum ; metalarum nervi pallidi. (Corp. long, f lin. ; 
alar. 1^ lin.) 
August ; on grass beneath trees ; near London. 
+++ Antennce 13-articulatce. 
f Antennce articulo 3°. scepe vix conspicuo. 4°. 5°. que minimis. 
C fere planus. Corpus angustum, sublineare VIII. Playterma. 
Thorax supra < 
( convexus. Corpus breve, latum IX. Amblymerus. 
Genus VIII. — Platyterma, 11 Walker. 
Corpus angustum, quasi squameum, plerumque sublineare : caput 
mediocre, thorace vix latius : mandibulae 4-dentata?, parvae, rectse, 
similes, intus breves et emarginata? ; dens externus mediocris, 
subacutus ; reliqui parvi, fere obtusi : maxillae elongata?, sub- 
arcuatas, angusta?, basi lata?, apice acuminata? ; palpi 4-articulati, 
filiformes ; articuli, l us ., 2 US . et 3 US . subaequales ; 4 US . longior, 
apice acuminatus : mentum elongato-ovatum : labium parvum, 
quasi fissum ; palpi 3-articulati, breves ; articulus 2 US . parvus ; 
3 US . acuminatus: antennae 13-articulatse, clavatae, lata?, corporis 
dimidio breviores ; articulus l us . sublinearis, gracilis ; 3 US . vix 
conspicuus ; 4 US . et 5 US . minimi; G us . et sequentes ad 10 urn . 
magnitudine crescentes, valde approximati ; clava brevi-ovata, 
depressa, non acuminata, articulo 10°. multo latior : thorax 
elongato-ovatus aut sublinearis, supra fere planus : prothorax 
brevissimus : mesothoracis parapsides scuto fere in unum confusae : 
metathorax parvus, postice vix angustius : maris abdomen sub- 
lineare, thorace paullo brevius et angustius ; segmentum l um . 
longum ; sequentia paullo breviora, subaequalia : fem. abdomen 
ovatum aut sublineare nonnunquam subcompressum, apice acumi- 
h irXuTvs latus, rep/xa finis. 
304 MONOGRAPHIA CHALCIDITUM. 
natum, subtus plus minusve angulatum ; segmenta subaequalia : 
pedes graciles, simplices : alas mediocres ; nervus radialis cubitali 
paulld longior ; stigma ramulum brevissimum emittens. 
Sp. 1. Plat, nobile. Fern. Viride, antennisfulvis, jjedibus 
Jlavis, alts hyalinis. 
Laete viride, sparse pubescens : os flavum : oculi ocellique run : 
antennae fulvae, corporis triente vix longiores, supra pallide fuscae, 
basi obscuriores : thorax elongato-ovatus ; mesothorax postice 
viridi-cyaneus : abdomen elongato-ovatum, micans, fere laeve, 
thorace paulld longius, sparse albo pilosum, subtus angulatum, 
apice acuminatum ; discus cupreus : pedes laete flavi ; coxae virides ; 
mesofemora subtus prope apices seta, nigra armata ; protibiae et 
protarsi fulva ; meso- et metatarsi apice, ungues et pulvilli fusci : 
alee hyalinae, albae ; squamulae et nervi flava, hi ante costam 
attingunt obscuriores; stigma minutum. (Corp. long. \\ — \\ 
lin. ; alar. If — If lin.) 
Var. j3. — Abdominis discus cyaneo-viridis ; segmenta apice obscure 
cuprea : meso- et metafemora basi fulva. 
Var. y. — Thorax omnind viridis : abdomen viride, basi apice et 
subtus cyaneo-viride ; discus cupreus : meso- et metafemora basi 
fulva. 
September ; on grass in fields ; near London. Isle of 
Wight. 
Sp. 2. Plat, laticorne. Fem. Prcecedentis colore, antennis 
brevioribus et latioribus. 
Viride, sparse pubescens : oculi ocellique run : antennae fulvae, 
corporis triente paulld breviores ; supra pallide fuscae : thorax 
elongato-ovatus : abdomen thorace longius, sublineare, fere laeve, 
sparse albo pilosum, subtus angulatum, apice acuminatum pilosius 
et paulld attenuatum ; segmentum l um ., 2 um . et 3 um . apice cuprea ; 
apicale aeneum : pedes fulvi ; coxae virides ; femora basi fusca, 
apice flava ; meso- et metatibiae basi fiavo cingulatae ; meso- et 
metatarsi pallide fulvi, apice fusci ; ungues et pulvilli fusci : alae 
hyalinae, albae ; nervi et squamulae fulva, illi apice pallidiores ; 
stigma minutum ; metalarum nervi pallide flavi. (Corp. long. 
11 lin. ; alar. If. lin.) 
August ; on grass in fields ; near London. 
MONOGRAPHIA CHALCIDITUM. 305 
Sp. 3. Plat, teliforme. Mas et Fem. Prcecedenlium colore, 
gracilius, abdomine longiore. 
Mas. — Laete viride, sparse pubescens : os flavum : oculi oceliique 
rufi : antennae fulvae, corporis dimidii longitudine ; articuli 2°. 
basi fusco ad 6 um . supra fusco-fulvi : thorax sublinearis : abdomen 
sublineare, fere laeve, thorace paullo brevius et angustius ; discus 
cupreus : sexualia pallide fusca : pedes laete fiavi ; coxae virides ; 
protibiae et protarsi fulva ; meso- et metatarsi apice, ungues et 
pulvilli fusci : alae hyalinae, albae ; squamulae et nervi straminea ; 
stigma parvum. 
Few. — Antennae paullo graciliores, corporis trientis longitudine ; 
articuli 2°. ad 10 um . supra pallide fusci: abdomen cyaneo-viride, 
sublineare, thorace dimidio longius, paullo compressum, apice 
acuminatum et attenuatum, subtus angulatum : oviductus flavus, 
subexertus ; tegmina nigra : protibiae basi flavae. (Corp. long. 
| — ]i lin. ; alar. 1— 1§ lin.) 
Far. /3. — Fem. antennae articulis omnibus supra pallide fuscis : 
abdomen viridi-cyaneum ; segmenta apice viridia. 
Far. y. — Fem. abdomen supra aeneo-viride. 
Far. c. — Fem. abdomen omnino viride. 
September ; Isle of Wight. 
Sp. 4. Plat, prasinum. Fem. Prcecedentium colore, P. teli- 
formi et laticomi brevius illoque latius, P. claro abdomine 
non subtus angidato discrepans. 
Laete viride, sparse pubescens : oculi oceliique rufi : antennae fulvae, 
corporis triente vix longiores ; clava laete flava : thorax elongato- 
ovatus : abdomen elongato-ovatum, thorace vix longius, fere 
laeve, albo sparse pilosum, subtus convexum, apice acuminatum 
non attenuatum ; discus aeneo-viridis : pedes laete fiavi ; coxae 
virides ; femora basi fulva ; protibiae et protarsi fulva, hi apice 
pallide fusci ; meso- et metatarsi apice, ungues et pulvilli fusci : 
alae hyalinae, albae ; squamulae et nervi straminea ; stigma 
minutum. (Corp. long. f — 1 lin. ; alar. \\ — 1^ lin.) 
Far. /3. — Antennae articulis 1°. ad 4 um . supra pallide fuscis : abdo- 
minis discus cupreo-viridis. 
Far. y. — Antennae articulis 1°. ad 10 um . supra fuscis. 
Far. c. — Abdomen omnino viride : femora basi fusca. 
Far. e. — Abdominis latera cyaneo-viridia. 
September ; Isle of Wight. 
NO. III. VOL. II. H R 
300 MONOGRAPHIA chalciditum. 
Sp. 5. Plat, cincticorne. Mas et Fern. Prcecedentiurn colore, 
antennis fulvis, mas ; aut pallide fuscis, fern. ; fusco 
cingulatis. 
Mas. — Laete viride, vix pubescens : oculi ocellique rufi : antennae 
fulvae, corporis dimidio paulld breviores ; articulus 2 US . basi nigro- 
fuscus ; 6 US . et sequentes ad 10 um . basi fusci ; clava fusca, basi 
flava : tborax elongato-ovatus : abdomen sublineare, thoracis 
longitudine sed paullo angustius ; discus aeneo-viridis : sexualia 
pallide fusca : pedes laete flavi ; coxae virides ; protibiae fulvae ; 
protarsi pallide fusci ; meso- et metapedum tarsi apice, ungues et 
pulvilli nigro-fusci : alae hyalinae, albae ; squamulae et nervi 
fulva ; stigma parvum ; metalarum nervi pallide flavi. 
Fern. — Paullo gracilius : antennae pallide fuscae, corporis dimidio 
breviores ; articuli basi obscuriores ; l us . nigro-fuscus : caput 
postice aeneo-viride : abdomen viridi-cyaneum, elongato-ovatum, 
thorace paullo longius, subtus angulatum, apice acuminatum non 
attenuatum ; discus aeneus : oviductus subexertus : femora fusca, 
apice flava ; protibiae pallide fuscae ; meso- et metapedum tarsi 
apice, ungues et pulvilli fusci. (Corp. long. \\ lin. ; alar. \\ 
lin.) 
May ; on grass in fields ; near London. 
Sp. 6. Plat, terminale. Fem. Prcecedentiurn colore, P. claro 
laticorni et prasino abdomine angustiore, P. teliformi ab- 
domine breviore discrepans. 
Laete viride, vix pubescens : oculi ocellique rufi : antennae flavae, 
corporis dimidio vix longitudine ; articulus 3 US . et sequentes basi 
obscuriores : thorax elongato-ovatus : abdomen aeneum, sub- 
lineare, compressum, thorace longius, basi viride, subtus paullo 
angulatum, apice acuminatum vix attenuatum : pedes laete flavi ; 
coxae virides ; femora fulva, apice flava ; tarsi apice, ungues et 
pulvilli fulvi : alae hyalinae, albae ; squamulae et nervi pallide 
flava ; stigma minutum. (Corp. long, lj lin. ; alar. H lin.) 
August ; on grass in fields ; near London. 
Genus IX. — Amblymerus,' Walker. 
Fem. — Corpus crassum, latum, quasi squameum, sparse pubescens : 
caput breve, thorace vix latius : mandibulae 4-dentat3s, sub- 
' 'AjUfSAus- obtusus, ^f'poj pars. 
MONOGRAPH1A CHALCIDITUM. 307 
quadratae, paullo arcuatas, similes, intus breviores et emarginatae ; 
dens externus et 2 US . mediocres, acuti ; 3 US . et 4 US . parvi, obtusi : 
maxillae elongatae, subarcuatae, acuminatos, apice angustae et 
ciliatas ; palpi 4-articulati, filiformes ; articuli 1°. ad 3 um . 
breves, subasquales ; 4 US . 2 1 . et 3 1 . longitudine, apice acuminatus : 
mentum elongato-ovatum, angustum : labium parvum, angustum, 
quasi fissum ; palpi 3-articulati, filiformes, breves, crassi ; articulus 
2 US . brevissimus ; 3 US . apice acuminatus : antennas 13-articulatae, 
clavatae, thorace breviores ; articulus l us . gracilis, linearis ; 2 US . 
elongato-cyatbiformis ; 5 US . et sequentes ad 10 um . gradatim 
breviores et latiores ; clava ovata, plana, articulis 9°. et 10°. latior 
sed vix longior : tborax ovatus, convexus : prothorax brevissimus : 
mesothoracis parapsidum suturae vix conspicuse ; scutellum fere 
rotundum ; paraptera et epimera bene determinata : abdomen 
ovatum, fere laeve, subtus carinatum et nonnunquam angulatum, 
apice acuminatum ; segmentum l um . fere trientis longitudine ; 
reliqua breviora, subsequalia : pedes simplices, latiusculi : alas 
plerumque latae ; nervus humeralis ulnar! longior, ramulum 
rejiciens nullum ; cubitalis radiali dimidio brevior, stigmate 
ramulum brevissimum emittente terminatus. 
Sp. 1. Amb. amaenus. Fern. Viridis aut aneo-cupreus, 
antennis fuscis, abdomine non subtus angulato, pedibus 
flavis aut falvis, alls hyalinis, proalis nonnunquam sub- 
flavescentibus. 
Laete viridis, caput thoracis latitudine : oculi ocellique rufi : antennae 
fuscae ; articulus l us . et 2 US . pallide rufi : capitis, prothoracis 
mesothoracisque latera cupreo-viridia : abdomen cupreum, subtus 
carinatum non angulatum, apice pilosum ; segmenta basi et 
utrinque viridia : pedes flavi ; coxa? virides ; metatibias intus 
fulvo vittatas ; meso- et metatarsi straminei, articulo 5°.,unguibus 
et pulvillis fuscis ; protarsi articulo 5°. rufo : alas hyalinae, latas ; 
squamulae et nervi pallide flava ; stigma minimum. (Corp. 
long. | — \\ lin. ; alar. \\ — 2\ lin.) 
Far. 0. — Antennae articulis 3°. ad 10 um . rufo-fuscis. 
Far. y. — Thoracis dorsum cupreo variegatum : abdomen cupreum, 
basi et utrinque viridi variegatum : metatibias omnino flavae. 
Var. c. — Antennae articulo 2°. rufo : thorax aeneo-viridis ; seg- 
mentorum margines virides : femora et metapedum tibiae pallide 
rufa. 
Var. £. — Abdomen viride, apice cupreum ; discus chalybeo fasciatus : 
femora, meso- et metatibiae fulva, apice flava. 
308 MONOGRAPHIA CHALCIDITUM. 
Far. £. — Far. e. similis : abdomen cupreum, basi aeneo-viride. 
Far. 7j. — Antennae articulo 2°. supra fusco. 
Far. 6. — iEneo-viridis : thorax antice et utrinque cupreus : femora, 
tibiae et protarsi pallide rufa ; meso- et metatibise apice flavae : 
proalas sub-nervum ulnarem paulld flavescentes. 
Far. i. — Far. 6. similis, seneo-cupreus : caput viridi-aeneum, antice 
et postice viride. 
Far. k. — Thorax aeneo-viridis ; scutellum cupreum. 
Far. X. — Viridis : thorax postice aeneo-viridis : abdominis seg- 
mentum l um . viride, micans. 
August ; on oak trees, &c. ; near London. September ; 
Isle of Wight. 
Sp. 2. Anib. dubius. Fem. Viridis aut ceneus, prcecedenti 
angustior, antennis fulvo fuscis, pedibus fulvis , alis hyalinis 
vix Jlavescentibus. 
Laete viridis, caput thoracis latitudine : oculi ocellique rufi : antenna? 
fulvae articuli 1°. ad 4 um . flavi ; clava fusca : abdomen aeneum, 
basi viride nitentius, subtus carinatum non angulatum : pedes 
fulvi ; coxse virides ; femora fusca, apice flava ; tibia? apice flavae ; 
mesofemora subtus ante apices seta valida armata ; tarsi apice, 
ungues et pulvilli fusci : alae hyalina?, minime flavescentes ; 
squamulae et nervi pallide fusca ; stigma minimum. (Corp. 
long. 5 — 1 lin. ; alar. \\ — 1| lin.) 
Far. ft. — Antennae fuscae ; articulus l us . omnino et 2 US . subtus flavi : 
femora apice fulva ; metatibiae fuscae, apice flavae ; tarsi et pro- 
tibiae flava, illi apice fusci. 
Far. y. — iEneus : abdomen basi viride, apice cupreum, segmenta 
apice nigro-aenea : pedes fulvi ; coxae senese; metafemora inermia? ; 
meso- et metatarsi flavi, apice nigro-fusci. — Species distincta. ? 
Far. c. — Far. y similis: abdomen nigro-aeneum, basi apiceque 
viride. 
August; near London. September; Isle of Wight. 
Sp. 3. Amb. validus. Fem. JEneus, viridi et cupreo varie- 
gatus, antennis fuscis, abdomine subtus angulaio, pedibus 
fulvis, alis hyalinis, nonnunquam subflavescentibus. 
Cupreo-aeneus : caput aeneum, postice aeneo-viride, thorace paullo 
latius : oculi ocellique rufo-fusci : os pallide fiavum : antenna? 
fuscae; clava obscurior ; articulus l us . pallide rufus : abdomen 
ENTOMOLOGICAL SOCIETY. 3(>9 
nigro-aeneum, subtus angulatum, basi cupreo-aeneum nitentius : 
pedes fulvi ; propedes flavi ; coxae aenese ; ungues et pulvilli 
fusci ; meso- et metapedum genua et tarsi pallide flava, hi apice 
fusci : alae subflavescentes : squamulse fulvae ; nervi pallidiores ; 
stigma minutum. (Corp long. 1 — 1± lin. ; alar. 1J — If lin.) 
Far. /3. — Caput et thorax obscure cupreo-aenea, ilium postice viride : 
abdomen cupreo- viride, basi nitentius ; discus nigro-aeneus : alas 
vix subflavescentes. 
Far. y. — iEneus : caput viride : antennae pallide fuscae ; articulus 
l us . flavus : abdomen nigro-aeneum, basi viride nitentius ; 
segmenta apicalia viridescentia : coxae virides ; profemora fulva : 
alae omnino perlucidaj. 
August; near London. New Lanark, Scotland. 
Art. XXVIII. — Entomological Society. 
Seventh Sitting. — April 7. 
We observed Dr. Ure among the strangers present. 
The President informed the meeting that Mr. Walker and 
Mr. Newman had withdrawn their names from the council of 
the Society, and that it was necessary that the vacancies thus 
occasioned in the council list be filled up by the Society. The 
council had met on the subject, and had agreed to propose to 
the meeting the name of Mr. Hanson, instead of Mr. Walker, 
and the name of Dr. Roget, instead of Mr. Newman. 
The Secretary read letters from M. Wiedemann and 
M. Lefebvre, who had been elected honorary members of the 
Society. 
The Secretary read a paper by Mr. Spence, detailing a 
curious mode, adopted in Italy, of excluding the house-fly 
from houses. The plan consisted simply in straining a net, 
made of white thread, across the aperture of an open window : 
the meshes of the net were about half-an-inch in diameter. It 
had occurred to Mr. Spence, whether it could be the dread of 
a spider's-net which caused the flies to avoid this thread-net, 
but on consideration he had determined otherwise, and he was