276 



Memoirs of the Indian Museum. 



[Vol. VII, 



The male measures up to 55 mm. in length and I'l mm. in thickness : the female 

 90 mm. and 1*5 mm. respectively. The cuticle has transverse striations about 17 ,• 



apart. Anteriorly the body is tapered 

 for a considerable distance, forming a 

 long, slender neck. The head is small, 

 its diameter being 0*245 to 0*26 mm. 

 There is a slight constriction at the 

 junction of the head and neck. The 

 oesophagus is 4*8 mm, long, including 

 the short, oblong ventriculus, which 

 measures o*6 mm. in length. The ante- 

 rior caecal prolongation of the intestine 

 measures from 2*7 to 3*0 mm. in length. 

 The nerve-ring is situated at about 085 

 mm. from the anterior end. At about 

 1 7 mm. from the head there is a pair of 

 large, sessile cervical papillae. The ex- 

 cretory pore opens, as usual, just behind 

 the base of the lips in the median ventral 

 line. 



The tail of the male (fig. 10) is conical and measures 0*39 mm. in length. About 

 half-way between the cloaca and the tip of the tail there is a distinct constriction. 

 There are no caudal alae. The postanal papillae are all sessile. There are about 



o-l mm. 



Dorsal lip of 



Fig. 9. — Porrocaecum angusticolle 

 female, viewed from exterior. 



c, " cuticular band " ; d.r., dentigerous ridge : p., 

 papilla. 



Fig. 10. — Porrocaecum angusticolle. Tail of male; ventral view. 



