98 Mr. G. C. Champion's Revision of the Mexican 



ments, the tibiae and tarsi, and sometimes the femora also, ferru- 

 ginous; thickly clothed with long, coarse, pallid hairs, the elytra 

 with still longer marginal cilia. Head densely, rugosely punctate, 

 the epistoma broad; antennae stout, short, joints 5-10 strongly 

 transverse, becoming progressively broader outwards, 11 narrower 

 than 10. Prothorax transverse, rather convex, strongly rounded 

 at the sides, the base slightly hollowed laterally (the trim- 

 cated median portion thus appearing narrow), the hind angles 

 obliterated ; closely, very coarsely punctate. Elytra elongate, a 

 little wider than the prothorax, rather convex, subparallel to beyond 

 the middle, the marginal carina moderately prominent and just 

 visible from above ; closely, coarsely punctate throughout. Beneath 

 densely, finely punctate ; fifth ventral segment unimpressed, truncate 

 at the apex. Legs stout, the tibiae closely spinulose and thickly 

 setose. 



$. Prothorax smaller, and narrowed from about the basal third 

 forwards; fifth ventral segment ferruginous at the apex only, the 

 latter rounded. 



Length 4|-6^ mm. (c?$.) 



Hab. Mexico {Truqui, in Mus. Brit. : (^ $), Venta de 

 Zopilote in Guerrero, 2,800 feet {H. H. Smith : (^). 



Nine males and one female, showing a complete grada- 

 tion in the colour of the elytra, from violaceous (the apex 

 excepted) to ferruginous. An elongate, subcyUndrical form, 

 with a transversely rotundate prothorax and very coarsely 

 punctate upper surface, clothed with long, shaggy, palhd 

 hairs, without intermixed darker erect setae, the tibiae 

 closely spinulose externally. T. mexicanus, Casey, from 

 North Mexico, seems to be nearly alhed; but as it is said 

 to have an unusually elongate prothorax in the male and 

 feebly serrate antennae, it must be difPerent from the 

 present species. The insect ($) referred by Gorham to 

 T. rufipennis (Lee.) is more finely punctate above, and 

 has erect black setae intermixed with the pallid hairs. 



7. Trichochrous cyanipennis, n. sp. 



$. Elongate, robust, somewhat depressed, moderately shining; 

 black, the elytra cyaneous, the apices of the latter, the third and 

 fourth antennal joints, the apices of the femora, the tibiae and tarsi, 

 and the tip of the last ventral segment, rufescent; thickly clothed 

 with long fuscous hairs, without intermixed, erect, longer setae, 

 the marginal cilia of the elytra very long, the hairs on the legs and 

 under surface pale brown. Head short, densely, rugosely pimctate, 



