290 E. C. POLLAKD. 



It is possible, however, that in P. Edward sii an epithelial 

 covering to the prostate is also present, but the flattened 

 cells lying close upon the large nuclei below as seen in 

 fig. 10 a may have escaped notice. 



The next figure (fig. 10 h) is from a section through the 

 actual testis {te. in fig. 6). The contents of the testis in this 

 region consist of numerous large nuclei and whisps or bundles 

 of spermatozoa. There is a considerable space between these 

 and the epithelium, probably due to shrinkage. The epithe- 

 lial wall is well seen, and is similar to that described and 

 figured in P. Edwardsii by Gafi'ron. The cells are higher 

 and the nuclei rounder than in the epithelium of the pros- 

 tate. 



More posteriorly still we get numerous cross-sections of the 

 coiled duct of the testis (fig. 10 c). The walls of this duct 

 are composed of cells with large round nuclei, and within its 

 cavity are numerous spermatozoa. The whole coiled mass is 

 surrounded by a layer of flat epithelium, and this is continued 

 over the straight portion of the vas deferens, where we 

 have accordingly two layers of epithelial cells, — an inner layer 

 of fairly tall cells with round or oval nuclei, and an outer layer 

 of flattened cells with rod-like nuclei. 



In no region of the testis have I found a muscular covering 

 external to the epithelium. 



Female Generative Organs (figs. 7 — 9). — On each ovi- 

 duct is situated a globular receptaculum seminis {H. S.) con- 

 taining spermatozoa, and possessed of double ducts as in the 

 other neotropical forms. Between the receptacula and the 

 ovary are a pair of sac-like appendages (R. Ov.), the so-called 

 receptacula ovorum of Kennel, but I have been unable to make 

 out a vesicle at their distal ends. 



Comparison with other Neotropical Species. — The 

 Peripatus of Dominica, P. Domiuicse, resembles the other 

 neotropical species in — 



i. The possession of four spinous foot-pads. 



ii. The position of the generative aperture between the legs 

 of the penultimate pair. 



