i8 



PERIPATUS 



Generative Organs. 



Male. — The male organs (Fig. 12) consist of a pair of testes 

 {te), a pair of vesicles (v), vasa deferentia (y.fO> ai"i accessory 

 glandular tubules (/). All the above parts lie in the central 

 compartment of the body cavity. In P. cxqjensis the accessory 

 glandular bodies or crural glands of the last (17th) pair of legs 

 are enlarged and prolonged into an elongated tube placed in the 

 lateral compartment of the body cavity {((.g). 



The right vas deferens passes imder both nerve-cords to join 



Fig. 12. — JIal« generative orgaii.s of Peripatiis capensi^, viewed from the dorsal surface. 

 (After Balfour.) a.g, Enlarged crural glands of last pair of legs ; 7^.16, 17, last pairs 

 of legs ; f, small accessory glandular tubes ; p, coniuion duct into wliich the vasa 

 deferentia open j te, testis ; v, seminal vesicle ; v.c, nerve-cord ; v.d, vas deferens. 



the left, and form tlie enlarged tube (^j), which, passing beneath 

 the nerve-cord of its side, runs to the external orifice. The 

 enlarged terminal portion possesses thick muscular walls, and 

 possibly constitutes a sperniatophore maker, as has been shown to 

 be the case in P. X. Zealandiac, by Moseley. In some specimens 

 a different arrangement obtains, in that the left vas deferens 

 passes under both nerve-cords to join the right. 



Female. — The ovaries consist of a pair of tubes closely ap- 

 plied together, and continued posteriorly into the oviducts. The 

 oviducts, after a short course, become dilated into the uteruses, 

 which join behind and open to the exterior by a median 



