140 



U.S. NATIONAL MUSEUM BULLETIN 236 



Figure SO. — Pehidium exiguum A. Scott, loc. 588, ad. 9: a, Sth thoracic somite and ab- 

 domen, left part, dorsal view; h, antenna; c, leg 1; d, leg 2; e, leg 3;/, leg 4. (X 310.) 



endopodal segment of leg 1 and the difference in length. The 4 

 appendages of the above-mentioned segment, according to A. Scott's 

 description and figure (pi. 65, fig. 14) are equally developed, but I 



