44 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 120 
0.1 mm. 
Figure 10.—C. carcinoxenus (drawn after Castro, 1932): a, basistyle and dististyle; d, 
mesosome. C. chidesteri: c, basistyle and dististyle, Bahia, Brazil, USNM RBé61 137; 
d, mesosome, Mayaguez, P.R., USNM RB61 409. C. corniger, Para, Brazil: ¢, basistyle 
and dististyle, USNM RB61 87; f, mesosome, USNM RB62 577. 
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