Fall. 1906.

A little less robust than either seminiveus or suffusus, the sides of the prothorax less strongly convergent in front and more abruptly subrectangularly constricted at apex, with the surface sculpture distinctly more coarsely cribrate punctate than in seminiveus. The prothorax is blackish brown above, the sides and under surface uniformly pale ochreous; elytra deep umber brown, feebly mottled, the suture paler; scales beneath in great part pale ochreous, the sides of the metasternum broadly, sides of second ventral segment narrowly, and the last ventral, except at the middle, dark brown; legs ochreous, femora suffused with pale brown apically, the subapical aunulus not very well defined. Length 7.5 mm.

Arizona (Wickham); Santa Rita Mountains, Arizona, in Agave palmeri (Hubbard and Schwarz collection). The form and sculpture of the prothorax, and the color readily distinguish this species from seminiveus and suffusus. In the last named species a good character not mentioned by Casey exists in the more broadly rugose discal elytral costse, these being relatively narrow and with a single series of asperities in seminiveus. There is some individual variation, but the ditference is obvious enough in all specimens seen.