424 Botanical Society of Edinburgh, 
List of Hybrids. 
Common Goose. 
Egyptian Goose. 
1 
Hooper Swan. 
Chinese Goose. 
Canada Goose. 
Bernacle Goose. 
White-fronted Goose. 
Chinese Goose. 
Spur-winged Goose. 
Common Duck. 
r^ A n r Chinese Goose. 
Canada Goose <r» i /-. 
1^ Bernacle Goose. 
Bean Goose Pink-footed Goose. 
White-fronted Goose Bernacle Goose. 
TMuscovy Duck. 
Shelldrake. 
Common Duck < Pintail Duck. 
Wigeon. 
Egyptian Goose. 
Shoveller , Garganey Teal. 
Pintail Wigeon. 
BOTANICAL SOCIETY OF EDINBURGH. 
April 8, 1847. — ^Dr. Greville, President, in the Chair. 
The following communications were read : — 
1. '* Description of an East Indian Palm, Areca triandra of Rox- 
burgh," by Dr. Balfour. The plant has recently flowered in the Bo- 
tanic Garden ; and cut specimens of the spadix, spatha and leaves, 
with a drawing and dissections of the flowers, were exhibited. 
2. ** Notes of a botanical trip to the Isle of Wight, in August and 
September 1846, with remarks on the geographical distribution of 
the British Flora," by Dr. Balfour. After giving a general de- 
scription of the geological features of those parts of the island which 
he had visited. Dr. Balfour enumerated some of the rarer plants 
found by him near Yarmouth, the Needles, Ventnor, Ptyde, and New- 
port : among these were some of the rarer species of Rubi, Calamintha 
sylvatica, Cyperus longus, Matthiola incana, Orobanche barbata, Inula 
Helenium, Spartina stricta, Dianthus prolifer, Melampyrum arvense ; 
remarkable specimens of Campanula glomerata, about an inch high ; 
Agrostis setacea, Calamagrostis lanceolata, Tamarix anglica, Hieracium 
inuloides, &c. &c. Dr. Balfour next alluded to the nature of the 
plants found in the island in a geographical point of view, as be- 
longing to Professor E. Forbes's Devon Flora and Norman Type ; and 
illustrated his remarks by a set of specimens, so arranged as to show 
at one view the various Floras of Great Britain and Ireland. 
Dr. Balfour afterwards read extracts from a letter from Mr. N. B. 
Ward of London, giving a short account of the successful mode in 
which he has been cultivating the rarer ferns, Jungermannise, and 
mosses in his plant-cases. 
Miscellaneous, 425 
MISCELLANEOUS. 
OCCURRENCE OF SERTULARIA ELONGATA, LAMOUROUX. 
To the Editors of the Annals of Natural History. 
Exeter. 
Gentlemen, — I have much pleasure in recording the occurrence on 
the British coast of the beautiful Sertularia elongata of Lamouroux, 
the S. lycopodium of Lamarck. A fine specimen of it has come into 
my hands, which was obtained by a lady, along with a number of 
sea-weeds, on the south-east or south coast of England. 
Dr. Johnston informs me that the Sertularia elongata is mentioned 
by Lamouroux as an English species, but as he does not state on 
what authority, the author of the ' History of British Zoophytes ' 
has not included it in his admirable work. 
This zoophyte, which is an exceedingly pretty one, may be at 
once distinguished from all our native species of Sertularia by the 
six long spines which arm the wide aperture of each cell. It is an 
interesting addition to our fauna. 
I remain. Gentlemen, yours, &c., 
Thos. Hincks. 
Description of two new genera of Shells. By Dr. Philippi. 
In Reeve's ' Conchologia Iconica ' we find under Mitra, No. 80, a 
dorsal view of a shell which Reeve states he found in Swainson's 
collection of species of Mitra with the name Conohelix edentula at- 
tached to it, but that it is decidedly a Conus. No description of this 
species however is given in Reeve's monograph of Conus. I had the 
good fortune to obtain this specimen last autumn by purchase, and 
am fully convinced that it belongs neither to Mitra nor to Conus, 
but must form a distinct genus which I have called Dibaphus, which 
will indicate its two colours, and at the same time call to mind its 
having been named twice. It may be briefly characterized as fol- 
lows : — 
Dibaphus, Ph., n. gen. Ctenobranchiorum. 
Testa spiralis, subcylindrica, in spiram acutam terminata ; apertura 
angusta, linearis, edentula, basi excisa ; columella basi recurva ; 
labrum incrassatum, rectilineum, basi rotundatum et abbreviatum ; 
labium nullum ; superficies epidermide (tenui ?) vestita. Animal . . . 
The second new genus, which I propose to call Amphichcena, may be 
characterized as follows : — 
Amphichcena, Ph., n. gen. 
Testa bivalvis, sequivalvis, subaequilateralis, utrinque hians, oblongo- 
linearis ; apices parvi, parum prominuli ; cardo in valva sinistra 
dentibus duobus, in valva dextra dentibus tribus constans ; liga- 
mentum externum, nymphae parum conspicuse ; impressiones mus- 
culares duae ; sinus palliaris profundus ; margo internus antice cre- 
natus, crassior. Animal .... 
Ann. ^ Mag. N. Hist. Vol. xix. 30