SPERM-TRANSFER ORGANS IN CA.MBAROIDES. 



259 



In Cambaroides similis, a specimen 55 mm. long had the hooks 

 developed as in Fig. I, a blunt rounded spine upon the third seg- 

 ment of the second and the third walking legs. Each spine 



JE 



HL 



FIG. 2. 



1 



8 



bears a few setae. They are like the spines of Canibarus Montc- 

 suince in being on the second and third legs, but are much shorter, 

 more blunt and less effective as hooks. The spine of the third 

 leg is the better developed. 



In Canibaroides Japonicus, Fig. 2, the hooks 

 are essentially the same, but more pointed. 

 In both cases the resemblance of the hooks 

 to those used by Cambarus is so strong that 

 one would infer that they are probably func- 

 tional in Canibaroides. 



In comparing the stylets of Cambaroides 

 with those of Cainbarus we note that the first 

 lacks the fine detail of apex commonly found 

 in Cainbarus and is a more stout and undiffer- 

 entiated organ. In Canibaroides sintilis, Fig. 

 3, the first stylet is a clumsy cylinder having 

 a movable joint between the long protopodite 

 and the somewhat longer distal endopodite. 



