H. A. Baylis 
417 
5. Ophidascaris gestri (Parona, 1890). 
Ascaris gestri Parona (1890), p. 768; PI. Ill, figs. 7-8. 
„ „ Stossich (1896), p. 53. 
Length, male, 55-67 mm.; female, 55-78 mm. Maximum thickness, 1 mm. 
Cuticular striations fine. Body elongate and slender, not tapering much at the 
extremities. Dorsal lip with two small rounded marginal papillae. Ventro¬ 
lateral lips with two [? two each] small papillae on their margins anteriorly, 
and with an indentation on each side at their bases. Tail of female very short, 
with a terminal spike. Vulva in anterior third of body. [Uterus?] Pail of male 
with a terminal spike. Papillae small and sessile, two pairs postanal and ten 
pairs preanal. Spicules long, equal, with rounded tips. 
Host: Tropidonotus piscator [ T . quincunciatus\. 
Locality: Northern Tenasserim. 
6 . Ophidascaris papillifera (v. Linst., 1897). 
Ascaris papillifera v. Linstow (1897), p. 281; PI. XXI, figs. 1-3. 
Length, male, 38-2 mm.; female, 55 mm. Thickness, male, 0*75 mm.; 
female, 1*1 mm. Cuticular striations 0-039 [? 0-0039] mm. apart. Body much 
attenuated in front. Tail in both sexes very short and rounded. Lips almost 
circular, with marginal dentigerous ridges* Dorsal lip somewhat longer than 
broad, with narrow base, and bearing in front two large, oval, diagonally- 
placed papillae. Pulp with two lobules projecting forwards and inwards. Inter- 
labia short, conical and rounded. Tail of male of total length. Six pairs of 
postanal papillae, of which one small pair is close to the cloaca and near the 
mid-ventral line, and one very large pair just behind these and more laterally 
placed. Preanal papillae 32-34 pairs, extending forward to l-78 mm. from the 
caudal end, larger and closer together behind, becoming smaller and more 
widely spaced in front. Spicules 4*74 mm. long and 0-062 mm. wide, lad of 
female 3 ^ of total length. [Vulva? Uterus?] Ova with very thick, closely 
stippled shell, measuring 0-073 x 0-065 mm. 
Hosts: Snakes ( indet .). 
Locality: Bismarck Archipelago. 
7. Ophidascaris solitaria (v. Linst., 1903). 
Ascaris solitaria. v. Linstow (1903), p. 109; PI. V, fig. 3. 
Length (immature female), 44 mm. Thickness, 0-81 mm. Dorsal lip oval, 
broader than long (0-14 mm. x 0-078 mm.). Dentigerous ridges nearly mar¬ 
ginal. Interlabia low, pyramid-shaped. Oesophagus ^ and conical tail 25y 
of total length. [Vulva? Uterus?] Male unknown. 
Host: Dipsadomorphus dendrophilus. 
Locality: Siam. 
