Bui. 1218. U. S. Dept. of Agriculture. 



PLATE IV. 



Tabanus monoensis n. sp., T. productus, and Chrysops coloradensis. 



A, Tabanus monoennis, adult female; B, pupa of same; C, larva of same; D, Tabanus productus 

 adult male; E, adult female of same; F, Chrysops coloradensis, adult female. 



