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U.S. NATIONAL MUSEUM BULLETIN 236 



Figure 13. — Macrocheiron cheliferum (Thompson and A. Scott), loc. 756, ad. ?; 

 nule; b, maxillipede; c, leg 5; ad. cf: d, maxillipede; e, leg 5. (X 510.) 



Legs 1 to 4 as in female: 3rd endopodal segment of 2nd pair with 

 short, thick spines. Leg 5 smaller than in female, about half as long, 

 with 2 setae, one of which, as in female, is thickened (fig. 13c). 



Remarks. — Macrocheiron cheliferum is a very rare species. It was 

 based originally on some female specimens (accurate number not 

 given) found in washings of invertebrates and debris from the Ceylon 



