418 
Classification of the Ascariclae 
8 . Ophidascaris naiae (Gedoelst, 1916). 
Ascaris naiae Gedoelst (1916), p. 3. 
Length, male, 62 mm.; female, 56-7 mm. Thickness, 1-1-07 mm. Cuticular 
striations 2-5-3 p. apart. Body cylindrical, more tapering in front than behind. 
ips square, with rounded angles. Dorsal lip with two papillae, ventro-lateral 
lips each with one papilla. Dentigerous ridges present. Interlabia small, 
narrow, with rounded extremity, 3 of length of lips. Oesophagus 2-9 mm. long, 
surrounded by the nerve-ring within its anterior fifth. Tail of male 0-2 mm. 
long with six postanal papillae (four ventral, two sub-dorsal); preanal 
papillae 35 pairs. Spicules slightly unequal in length (5-04 mm. and 4-64 mm ) 
with rounded tips. Tail of female 0-24 mm. long,- with conical tip. Vulva in 
middle of body. [Uterus?] Ova elliptical, with thick, finely punctate shell 
measuring 0-08 x 0-072 mm. 
Host: Naja nigricollis. 
Locality : Belgian Congo.. 
9. Ophidctscaris intorta (Gedoelst, 1916). * 
Ascaris intorta Gedoelst (1916), p. 4. 
Length (immature females) 100-110 mm. Thickness 0-736 mm. Cuticular 
striation not visible. Lips large, quadrangular, with minute, marginal denti¬ 
gerous ridges. Interlabia small, triangular, with rounded extremity. Dorsal 
hp with two papillae, ventro-lateral lips with one each. Pulp with a flabelliform 
lobule directed forwards and outwards on either side, the free edge of which 
bears very numerous sharp digitations. Of these the outermost is the largest, 
and is directed backwards. Oesophagus of total length, surrounded by 
the nerve-ring within its anterior fifth. Excretory pore at 1-07 mm. from 
anterior end. Tail blunt, rounded, 0-18 mm. long, with terminal spike 0-03 mm 
ong Vulva in anterior third of body. [Uterus?] Genital organs lie behind the 
level of the vulva. 
Host: Bitis sp. 
Locality: Belgian Congo. 
( 2 ) Polydelphis Duj., 1845. 
Polydelphis Dujardin (1845), p. 221 (as sub-genus of Ascaris). 
Generic Diagnosis. Ascarinae : Lips oblong, or more or less hexagonal, 
in outline, frequently longer than broad; usually broader at the base than at 
t e free edge. Dorsal lip usually smaller than ventro-lateral lips. Two simple 
or double papillae on dorsal lip; one large simple or double papilla towards 
ventral side of each ventro-lateral lip. Pulp of ventro-lateral lips sometimes 
asymmetrical. Interlabia absent. No grooves at bases of lips. Oesophagus 
usually short, without bulb or ventriculus. A rudimentary intestinal caecum 
