528 MR. w. E. coLLiNGE ON A NEW [June 19, 



constricted, and again a little higher up ; its upper portion is 

 convoluted and opens into a long thin tube — the vas deferens. 

 In J. hitentaculata the penis is much shorter, and usually exhibits 

 a sharp distinction between that organ and the vas deferens (</. 

 Ivefersteiu ' and Macdonald -). Attached to the distal end of the 

 penis is a small short retractor muscle ; its point of attachment to 

 this organ affords a ready means of distiuguishing between penis 

 and vas deferens. The continuation of the vestibule forms a 

 simple pouch-like cavity — the free portion of the oviduct. From 

 reference to figs. 1 & 3, it will be seen that in J. maculata the long 



/p-rm. 



"V.db. 



v.d • 





\y^ — U.S. 



Generative system of Janclla hitentaculata. 

 (For lettering see p. 527.) 



tube-like portion of the free oviduct is absent, whUst in J. hiten- 

 taculata it is quite as long as the pouch-like portion. The 

 receptaculum seminis is a large oval or circular sac, opening into 

 the lower portion of the free oviduct, just above the opening of 

 the penis into the vestibule. The combined oviduct and prostate 

 form a short convoluted tube, not more than two-thirds the length 

 of that organ in J. hitentaculata. Covered partly by the large her- 

 maphrodite gland and its duct is a very peculiarly shaped albumen- 

 gland, consisting of a large oval-shaped mass with, a thin flattened 

 upper portion. The hermaphrodite duct is large and oval in form, 



' Zeit. f. wise. Zool. 1865, Bd. xv. t. xxxiv. fig. 3. 



2 Ann. & Mag. N. H. 1856, vol. xviii. (ser. 2) pi. iii. fig. 6. 



