1914 J F. H. vStewart : Indian H elminthology , No. 1 . 181 



dorsal line to the right lateral line, the sharp point lying in the 

 latter, the base in the former (fig. 57). 



The pore of the ventral gland is situated '27 mm. from the 

 head in the ventral line, and the gland extends from this point 

 backward to about 2 mm. from the head (figs. 57, 59, 61, 62). It 

 consists of a bulky hyaline bod}^ somewhat of a yellow colour in 

 unstained preparations. It is closely applied to the ventral 

 surface of the intestine and oesophagus, and the anterior portion 

 is divided into several lobes. A thread-like duct traverses the 

 entire organ, but in the portion which was cut in sections this 

 ' duct ' did not exhibit a patent lumen. 



Two narrow cellular cords applied to the posterior end of the 

 ventral gland probably represent the rudiment of the gonads. 



It is not possible to diagnose this larva more exactly than as 

 belonging to the meromyaria. 



II. Larva undiagnosed. (L. 14). 

 (PI. xxiii, figs, 63-65.) 



Two immature worms from the stomach of Wallago attoo, 

 which cannot be referred with certainty to any genus, from the 

 same locality. 



The measurements are given in table IX (page 192). 



There are no lips (fig 6.3). The mouth is circular and leads 

 into a barrel-shaped buccal cavity. The walls of this cavity are 

 cuticularised, brown in colour, thinnest in front, thickening to the 

 equator {a), then again becoming somewhat thinner with a 

 thickened ring at the posterior extremity {b) 



The cuticle of the body covering shows annular markings on 

 its outer surface, of irregular breadth (■ooi7-'oo34 mm.) on the 

 anterior half of the body, more regular (0017 mm.) on the 

 posterior half. 



The anus (figs. 64, 65) opens in a broad transverse cleft '0374 

 mm. from the base of the caudal spurs, and '0544 mm. from the 

 tip of the tail. 



The caudal spurs (figs. 64, 65) are two in number, subventral, 

 conical in shape, and equal in size to the tail. 



Internal stnicture — The oesophagus (fig. 63) is simple and 

 without a bulb. At its commencement it is twisted. It possesses 

 the usual triradiate lumen, its substance is hyaline in appearance 

 and devoid of distinct muscular fibres 



The intestine is divided into two sections, the first with finely 

 granular walls and a straight lumen, the second and longer section 

 with curved transverse markings. 



These larvae cannot be referred with certainty to any genus. 

 The oesophagus is the organ which shows the greatest constancy 

 in the transition from larval to adult life, and in this respect the 

 larvae which we are considering resemble the Filariae. The two 

 prominent characters which these organisms possess, namely the 



