NEW GENERA AND SPECIES OF NEMATODE WORMS
By Asa C. Chandler
Of ilie Riice Institute, Houston, Tex.
This paper contains descriptions of several new genera and species
of parasites collected from Asian and American vertebrates. One
species, B our gelatio ides traguU, new genus, new species, belongs to
the suborder Strongylata, while the others all belong to the suborder
Spirurata. One of the latter, Filarlopsis Ofrator., has been placed in
a new famil}^, Filariopsidae.
BOURGELATIOIDES, new genus
Generic diagnosis. — Oesophajiostominae : Mouth capsule cylindri-
cal, shallow, with thick chitinous walls, divided into anterior and
posterior compartments. Posterior end of capsule attached to the
cuticle by a chitinous ring and anterior portion of capsule separated
from posterior portion by a crown of small leaflets. Anterior border
of capsule without leaf-crown, but with four large papillae in the
wall. Head end of body delimited in esophageal region by a groove
and an overlying flap of cuticle entirely encircling the body. Bursa
well developed, the large dorsal ray split for about half its length,
each branch again bifurcated; externodorsal very large; posterolat-
eral and mediolateral closely approximated; ventrals closely approx-
imated but split almost to the common base. Spicules equal, moder-
ately long, winged, each terminated by a long coiled filament. Vulva
in posterior part of body. Tail of female bluntly conical, ending in
a sharp point.
Type species. — Bourgelatioides traguli.^ new species.
In many respects the worm for which this genus is erected re-
sembles Bourgel^tia., the single species of which was described from
the intestine of pigs in Annam by Railliet, Henry, and Bauche
(1919), but it differs in lacking an anterior leaf-crown and in other
details of the mouth capsule, in the presence of a groove and over-
lying flaps in the cervical region, and in the prcvsence of terminal
No. 2866.— Proceedings U. S. National Museum, Vol. 78, Art. 23