i68 Records of the Indian Museum. [Vol. X 



hollow cylinders, not " tres-minces tres-flexibles , . termines en 

 pointe falciforme tres-aigue." (vi) Viviparous not oviparous. 



Comparison with Oxysoma brevicaudatum, Zeder as described 



by Schneider (19). 



Schneider's specimens were " immature " and engaged in 

 moulting. He nevertheless identifies them with //. brevicaudata, 

 Dujardin, and on the results of his examination of these dubious 

 specimens criticises adversely and corrects Dujardin's definition. 



The Ivucknow Oxysoma is smaller, since Schneider's measure- 

 ments are given as 9 5"5 mm. cf 3 mm. In Schneider's species the 



-,, ~ "7^ is -4- and the male does not bear a bursa, 

 y , — 1 ail '04 



Comparison with Oxysoma contortum, v. Linstow (7) from 



the large intestine of Bufo vulgaris, Korfu. This species measures 



& 5-4 long by "3 mm. in Br. 

 2 5'9 ,, ,, '35 m. in Br. 



the males are therefore more than five times as long as those of 

 Oxysoma macintoshii, the females about three times as long; the 

 species does not exhibit the marked difference in size between 



Br 



males and females. The relation of f— ^ in the male is very 

 different, \, contrasted, with I ~ ~ mO. macintoshii. The spicules 



' Is o 10 



are relatively much longer ^— ^ ^^ spicu e .^^ q contortiim = -^ n\ 

 0. macintoshii = -^. Caudal papillae of cf in 0. coniortum pre- 



anal 12, postanal 6 pairs, in 0. macintoshii preanal 6, postanal 13 

 pairs. 



In the female, the vulva is behind the middle of the body in 



0. contortum, in front of it in 0. macintoshii. — yy,' ' in 0. 



contortum ^ in 0. macintoshii ~ -. 

 37 56 



The following two species of Oxysoma have been described in 

 recent years from batrachians : 



Oxysoma tuberculatum, v. Linst., from Megalophrys mon- 

 tana (10) differ from 0. macintoshii in possessing six lips each bear- 

 ing a thorn-like spine : the immature female measures 4"5 mm. 



O, terdentatum, v. Linst. (9) from the gut of Triton crisiatus. 

 Head with three lips, each lip with two papillae. The oesophagus 

 projects between the lips forming three rounded projections each 

 of which is armed with a tooth (So far agrees with 0. macintoshii). 

 The oesophagus has no enlargement (Herein differing from 0. 

 macintoshii) 9 — E5 mm. — br. "46 mm. 



V. lyinstow gives a poor figure of the head of 0. brevicaudatum . 

 Zed. in ((S). The figure does not show an}' teeth. 



