DISTRIBUTION AND CLASSIFICATION OF ONYCHOPHORA, 895 
in greatest diameter in P. capensis, in P. Balfouri ‘4 
mm.; in P. cinctipes it is smaller, probably about ‘2 mm., 
but its length is not given by Purcell). ; 
12. Embryos usually without trophic vesicles, but Bouvier 
states that there is a tendency to a dorsal trophic vesicle like 
that of Melano-Peripatus in two species (P. Sedgwicki! 
and Moseleyi). 
iy, 
Fic. 12.—Female generative organs of P. cinctipes. (After 
Purcell.) ov. Ovary. 7s. Receptaculum seminis. od. Oviduct. 
g- Genital opening. 
13. Uterine embryos of nearly the same age. They differ 
most in P. cinctipes (Fig. 12), in which, however, the 
difference is not very great. 
14. Unpaired part of vas deferens short. 
1 So named by Purcell. Bouvier has applied the same name to a species 
of Neo-Peripatus found in Venezuela (this footnote is referred to on 
p. o84). 
