374 Memoirs of the Indian Museum. [Vol,. V, 1916.] 



X. Reproductive System. 



The gonads form irregular branching masses beneath the dorsal wall of the foot in 

 its anterior two-thirds and both along the lateral and the dorsal aspects in its poste- 

 rior one-third ; the lateral group passes upwards to the ventral aspect of the gullet 

 and extends backwards to the anterior end of the liver. The mass extends backwards 

 on the inner side of the lateral walls of the visceral mass in the middle third of its 

 lower half on the outer side of the coils of the intestine. Posteriorly behind the 

 liver and the coils of the intestine, the gonads are more numerous and nearly fill the 

 cavity of the visceral mass. 



