294: On some Parasitic Worms from East Africa. 



vagina (fig. 9, vay.} opens into the cloaca behind the cirrus- 

 sac, in the same horizontal plane. It has a wide lumen for 

 the greater part of its length, the distal portion probably 

 serving as a receptaculum seminis. Just before reaching the 

 female glands it suddenly becomes narrow. The vas deferens 



Fte. 9. 



Oochoristiea crassiceps. Semidiagrammatic view of the arrangement of 

 the genital organs in three consecutive mature segments (from 

 a whole preparation). 



cl., genital cloaca ; c.s., cirrus-sac : ov., ovary ; t., testes ; vac/., vagina ; 

 v.d., vas deferens ; vit., yolk-gland. 



(fig. 9, v.d.) is considerably coiled. There is no specialized 

 seminal vesicle. 



The general arrangement of the female organs is similar 

 to that found in other species. The ovary (fig. 9, ov.) is 

 the most anterior organ, and lies in the median field of the 



