1914] F- H. Stewart : Indian Hclndntholooy, No. I. 179 



The intestine is dilated where it receives the oesophagus. 



The rudimentary gonads extend from the junction of the 

 oesophagus and intestine to the anal canal, and lie ventral and to 

 the side of the intestine. 



Systematic position. — After considering the structure of the 

 head and of the oesophagus little doubt remains that we are 

 dealing with a Physaloptera. The two lateral lips with their teeth 

 and papillae are characteristic. The division of the oesophagus 

 into an anterior muscular and a posterior glandular section also 

 occurs in this genus, — compare Physaloptera clausa, Rud. (Dujar- 

 din, p. 85). 



The adult doubtless inhabits a snake or bird. 



The only adult Physaloptera recorded from an amphibian is 

 Physaloptera amphibia, v Lin., which inhabits the oesophagus and 

 stomach of Rana macrodon, Kuhl., in the island of Luzon (v. 

 Linstow (13), p. 15). 



8. Ascaris, sp. Larvae (L. 33, 36), 

 (PI. xxii, figs. 52, 53,54.) 



Larvae (L- 33 and 36) ' from the peritoneal cavity of Wallago 

 attoo, Bl. Schn. and Ca'.lichrous pabda, Ham. Buch. : Lucknow and 

 Calcutta, numerous specimens encysted For details of measure 

 ments refer to table VIII, columns 36 and 33 (page iQi). 



The head (figs 52, 53), bears three lips of which the dorsal 

 and right subventral are less prominent than the left subventral. 

 The latter is apparently used as a boring organ and carries a 

 thickened cap of cuticle which is either sharply conical or more 

 rounded and surmounted by a nipple-like projection. The surface 

 between the lips is formed b}^ the body wall and not by the 

 anterior extremity of the oesophagus as in L. 15. No cephalic 

 papillae observed The head is separated from the body b}' a 

 slight constriction, "033 mm. from the anterior extremity, and 

 behind this constriction the cuticle shows a succession of rings 

 for a distance varying from 'i8 to "646 from the head. 



The tail is represented in fig. 54. There is no definite caudal 

 appendage. 



Oesophagus: — The anterior end is sharpened by portions 

 cut out opposite the three lips. Oesophageal and intestinal diver- 

 ticula are present, the former •731 mm. long, the latter '935 mm. 



9. Ascaris, sp. Larvae (L. 15).. 



. (PI. xxii, figs. 55, 56.) 



Two specimens from the peritoneal cavity of Wallago attoo, 

 Bl. Schn. They were free, moveable and extended, not encysted 

 and coiled up. 



^ Numbers preceded bv an I., are serial numbers of the specimens. 



