i8o Records of the Indian Museum. [Vol. X, 



The measurements are given in table VIII, col. 15 (see 

 page 191). 



T.L. 25 and 30 mm. One sp. (i. 30 mm.) showed rudiments 

 of 9 organs^ the second gave no indication of sex. They taper 

 very slowly and uniformly from the middle to the head, which is 

 truncated ; the posterior half is of fairly uniform diameter and the 

 posterior end tapers more abruptly than the anterior. 



The head bears two short conical horns — dorsal and ventral, 

 composed partly of thickened cuticle, but also resting on a raised 

 pulpa. From each horn two fillets of thickened cuticle curve, one 

 on either side, to meet m the midlateral lines. These fillets form 

 the anterior margin, a ring of thickened cuticle which surrounds 

 the head. On this ring are situated four submedian papillae, two 

 submedian dorsal, two submedian ventral. Between the horns 

 the anterior end of the body of the oesophagus projects in front of 

 the fillets. 



Intestinal and oesophageal diverticula are present, the latter 

 long and narrow. Both the oesophagus and its diverticulum are 

 of a black- grey colour. 



One specimen contains developing sexual organs, vulva and 

 single gonad tube, which latter lies on the left side of the intestine. 



The tail is conical, but its shape varies according to the state 

 of contraction or relaxation of a circular band of muscle which 

 surrounds the body at the level of the anus. 



Probably the larva of an Ascaris belonging to Schneider's 

 group C. or D. 



10. Larva undiagnosed. (L. 30), 



(PL xxii, figs, 57-60. PI. xxiii, figs. 61, 62.) 



A single specimen obtained from the intestine of VVallago 

 attoo, Bl. Schn. Lucknow. It exhibits only the rudiments of 

 sexual organs. Length 467 mm. For measurements see table 

 VIII, column 30 (page 191). It narrows fairly abruptly toward the 

 head (fig. S7), more gradually toward the tail. The head is of a 

 flattened dome-shape with a rounded funnel-shaped mouth (fig. 58) 

 and two conical horn-like processes — one dorsal, one ventral. 



The lateral lines (figs. 61, 62) are broad and divided into two 

 sections longitudinally, each occupies about |-th of the circum- 

 ference of the body ; musculature is meromyarian. Transverse 

 rings appear to be artificial. 



The postanal region (fig. 60) is short and conical, and bears 

 a small caudal appendage. The anterior lip of the anus is ver)^ 

 prominent and broad, and mea.sures half the length of the tail. 



The oesophagus (fig. 51) occupies the region measuring '56 

 mm. from the head. It is contorted and without a bulb. 



The intestine presents nothing of note. Neither oesophageal 

 nor intestinal diverticula are present. 



In the posterior oesophageal region a peculiar spine lies em- 

 bedded in the right side of the body wall, extending from the 



