CALMA GLAUCOIDES 



449 



organ named prostate in the Bullids. When retracted this 

 gland lies along with the terminal coils of the vas deferens 

 tucked away in the head above the brain, but is partly drawn 



Text-fig. 2. 



Dissection of the reproductive system of a small, nearly mature 

 individual, amp., ampulla of h.d., the sperm-oviduct ; m.a. and 

 f.a., male and female acini ; m.o. and f.o., male and female 

 openings ; g.a., glandular appendage of the penis ; g.u., genital 

 unit ; n.g., nidamental gland ; p.s., penis sac ; r.s., receptaculum 

 seminis ; sh.g., shell-gland ; sp.p., sperm-path from the recepta- 

 culum to the commencement of the oviduct at «/ ; v.d., vas 

 deferens ; 1.2.3.4.5, coils of the oviduct similarly numbered in 

 Text-fig. 3. 



into the everted penis, giving it its shape and firmness. The 

 large cells lining it contain a clear secretion which, unlike the 

 granular contents of the prostatic cells of the vas deferens, 



