SMITHSONIAN MISCELLANEOUS COLLECTIONS 



95 



different species from small podlike capsules (E) to long- tubes or 

 flask-shaped structures. Associated with the genital organs of the 

 male is a pair of tubular accessory glands (C, D, AcGld). 



The ovaries of the female are a pair of short tubes (fig. 5 A, Ov) 

 lying above the alimentary canal near the posterior end of the body. 

 The two organs are united at each end, and are suspended anteriorly 

 by a broad ligament {Lg) from the dorsal diaphragm. The growing 

 oocytes are contained individually in follicular diverticula of the 

 ovarian walls, and the mature ova are fertilized within the ovaries or 

 in the oviducts close to them. The oviducts are long tubes looped for- 

 ward from the united rear ends of the ovaries and then backward to 

 open into a common median invagination of the body wall at the 



Fic. 6. — Oiiychophora : position of the genital openings. 



A, Pcripatns, gonopore {Cpr) between penultimate pair of legs. B, Peripa- 

 loides novae-zcalandiac , gonopore between last pair of legs, but true terminal 

 pair of legs probably here suppressed. 



gonopore {Od). In most species each oviduct is provided with a 

 small spermatheca (A, B, Spt) in the neighborhood of the ovary, and 

 may have also other tubular or vesicular diverticula (B, a, b). The 

 majority of the Onychophora are viviparous, and in such forms the 

 embryos develop to maturity in uterine chambers of the oviducts (A, 

 Utrs) ; with oviparous species the relatively large eggs are discharged 

 from the body before development begins. Development is always 

 direct, and the newly born or newly hatched young have the form of 

 the adult. 



Both male and female Onychophora have a single external genital 

 opening (fig. 6, Gpr), which is located near the posterior end of the 

 body, probably in all cases on the same body region, which is the 

 venter of the penultimate somite before the terminal anal cone. When 



