50 



U.S. NATIONAL MUSEDM BULLETIN 236 



from the rest of the claw, with fme denticules along mner edge; inner 

 edge of the rest of the claw with strong, plate-shaped teeth, gradually 

 decreasing in size basally. The structure of the antenna, as described 

 here, differs in some respects from that in Thompson and A. Scott's 

 description and from Gurney's drawing (1927, fig. 114a). 



Figure 12. — Macrocheiron cheliferum (Thompson and A. Scott), loc. 756, ad. ?: a, whole 

 animal, dorsal view; b, abdomen, dorsal view; c, abdomen, lateral view from right side; 

 /, rostrum, ventral view; g, antenna; ad. cf: d, abdomen, ventral view; e, abdomen, 

 lateral view from right side, {a, X 80; b-f, X 150; g, 250.) 



Mouth parts of female described and figured by Thompson and A. 

 Scott (1903) and not described in detaU here. Maxillule has been 

 figured by these authors as mandibular palp. MaxUUpede (fig. 136) 



