3 68 



THE ANIMAL PARASITES OF MAN 



head to near the anus. It leads into a short or long vagina (ectodermic) r 

 bifurcating into the two uteri, which may be long or short ; the long 

 filiform ovaries are continuations of them (tig. 264). Further there is 

 often, e.g., in Ankylostoma, a differentiation into the following parts : 



A test. 



Vulva 



Ovd. 



Rec. 

 'sem. 



\- Ovd, 

 -Ov. 



FIG. 264. Diagram o f 

 female genitalia. Ov., ovary (in 

 part) ; Ovd., oviduct; Rec. sent., 

 seminal receptacle; //., uterus 

 (in part) ; Ov;'., ovejector ; Vag., 

 vagina. 



/.V. 



FIG. 264A. Diagram of male genitalia of a strongy- 

 lid. Test., testis (in part) ; S. V., seminal vesicle ; e.g. , 

 cement gland surrounding ejaculatory duct ; sp., spi- 

 cules ; cL, cloaca; gnb., gubernaculum ; p.p.a.^ pulvil- 

 lus post-analis ; g.c., genital cone ; l.d., dorsal lateral 

 line ; l.v. y ventral lateral line (the bursa is not shown). 



(i) Ovejector : the specialized portion of the uterus before it joins the 

 vagina ; there may be a separate one for each uterus, or a common 

 one for both uteri. (2) Seminal receptacle : at the other extremity of 

 the uterus. (3) Oviduct : a narrow tube connecting the ovary with 



