268 



Memoirs of the Indian Museum. 



[Vol. VII, 



The tail of the male (fig. 3) measures 0*33 mm. in length. It is not, as is sometimes 

 stated in text-books, without postanal papillae. On the contrary, it possesses three 



pairs on the ventral surface, of which the most ante- 

 rior consists of very large, double papillae. There 

 appear to be about nine pairs of preanal papillae. 

 The spicules are stout, tubular and without alae. 

 They were unfortunately broken in our specimens, 

 and we are unable to give their length. Their dia- 

 meter is about 0043 mm. 



The vulva is situated at about 17 mm. from 

 the anterior end in a specimen mm. 125 long, thus 

 dividing the body in the proportion of about 1 : 6. 

 The vagina and the unpaired portion of the iiterus 

 run back, gradually widening, with a rather sinuous 

 course, to a point about 11 mm. behind the vulva, 

 before giving off the two parallel uterine branches. 

 The coils of the ovarian tubes return towards the 

 anterior end as far as the level of the vulva. The 

 eggs are oval, and have a thick, coarsely granul- 

 ated shell and an unsegmented content. They 

 measure 0*075-0*09 xo , o6-o*07 mm. 



Fig. 2. — Ascaris vitulorum. Pos- 

 terior portion of oesophagus and com- 

 mencement of intestine. 



i., intestine; m., muscular portion 

 of oesophagus ; v., ventriculitis. 



Ascaris, sp. 

 A small immature female, from the intestine of 

 a wild pig (Sus bengalensis) , near Dinapore, Bihar. It is doubtful whether this can be 

 assigned to A. Inmbricoides. 



Fig. 3. — Ascaris vitulorum. Tail of male ; ventral view. 



