228 



U.S. NATIONAL MUSEUM BULLETIN 261 



Figures 216-218.— 216, Oncometopia {Similitopia)fusc{pennis¥owlcT, specimen 

 from Cuernavaca, Mexico, plate not shown in c. 217, 0. (S.) rufipennis 

 (Signoret), specimen from Acapulco, Mexico: j, anal tube, dorsal view. 

 218, O. {S.) alpha Fowler, specimen from Granite DeUs, Arizona (plate not 

 shown in c): j, pygofer, right side in ventral view. 



