V. — On the Anatomy of Opisthopatus cinctipes, Pure, tvith Notes 

 on other, principally South African, Onychophora. — By W. F. 

 PuECELL, Ph.D., Fi7-st Assistant. 



(Plates X., XL, XII.) 

 Since my previous paper on the South African species of Onycho- 

 phora was written, the Museum has received several valuable 

 contributions of fresh material, principally through the kindness 

 of the Eev. J. E. Ward, the Eev. J. A. O'Neil, and Mr. W. Clark. 

 The results of an examination of this material, and more especially 

 of several living and preserved specimens of the male of 0. cinctipes, 

 which has not hitherto been described, are embodied in this paper, 

 and appear to me to completely justify the separation of the last- 

 named interesting form as a separate genus, connecting the Cape 

 genus Peripatopsis with the mainly American genus Peripatus. 

 The recent discovery by Bouvier of a West African species of the 

 latter genus (P. tholloni, Bouv.) in the collection of the Paris 

 Museum is, therefore, of particular interest. 



For convenience of reference I have divided this paper into two 

 portions. 



I.— ANATOMICAL PART. 



This part deals mainly with the comparative anatomy of Opistho- 

 patus cinctipes. Pure, in particular that of the genital organs and 

 the legs and the organs connected therewith, such as the coxal 

 organs, the crural glands and the accessory glands of the male. 

 The specimens at my disposal were those mentioned on pp. 106-107. 



1. Tlic jaics. 



The jaws closely resemble those of Peripatopsis and certain species 

 of Peripatoidcs. In both Opisthopatus and Peripatopsis each jaw 

 is in reality composed of several (as many as four) hollow pieces 

 of similar shape and equal size, encased one within the other (see 



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