( 131 ) 



a longitudinal fold ends near the middle of the ventral margin in a sharp spinelike 

 tooth, a similar tooth stands farther distally, and the apes of the clasper is also 

 modified into a sharp long spinelike process, this process and the second tooth are 

 strongl}' curved ; the dorsal edge of the clasper bears several small spinelike teeth. 

 The penis-sheath has no sj^ecial armature ; the longer side is distall}' incrassate, 

 but does not bear teeth, and, although prolonged, is not produced into a free process 

 projecting much beyond the edge of the orifice. 



The genital armature of the second S, from the Gold Coast, somewhat differs 

 in detail. The anal tergite is less incurved centrally and tapers more gradually, 

 especially at the apex, which is rather broader than in the t\'pe. The second tooth 



Fig. 4. — PolypfychuK cymatotlca, 

 5. — ,, falcatns. 



of the clasper is not longer than the first and hardly at all curved ; the apes of the 

 clasper is less prolonged and much less curved than in the type ; on the other hand 

 the clasper is broader before the apex and the dorsal teeth are much larger than 

 in the type. 



Having only one specimen from each locality, it is impossible to say whether 

 these differences are individual or geographical. 



The genital armature of /'. fnlcatus agrees with that of cymalodes only as 

 regards the penis-sheath and the absence of friction-scales on the clasper and the 

 inside of the eiglith tergite. The anal tergite ])ointed ; the sternitc a low but 



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