102 Mr, G. C. Champion's Revision of the Mexican 



broadly fusco-pubescent disc of the elytra, and the closely 

 cinereo-pilose suture and apex, are characteristic. The 

 intermixed palhd erect hairs are extremely long and fine. 

 The sexual characters are strongly pronounced. T. vittiger, 

 Casey, from New Mexico, is perhaps an alhed form. 



12. Trichochrous paleatus, n. sp. 



(^. Moderately elongate, subcylindrical, shining; aeneo-piceous, 

 the basal joints of the antennae (the first excepted) and the legs 

 ferruginous, the knees or femora sometimes infuscate; thickly- 

 clothed with long, coarse, cinereous, decumbent hairs intermixed 

 with scattered suberect black setae, the marginal cilia long. Head 

 closely punctate, the epistoma tumid and smooth in the middle; 

 antennae short, rather slender, joints 5-10 transverse, serrate, 5 a 

 little broader than 6, 9 and 10 wider than 8. Prothorax convex, 

 transverse, rounded at the sides, narrowed anteriorly, coarsely, 

 closely punctate. Elytra subparallel, about as wide as the pro- 

 thorax, bluntly, conjointly rounded at the apex; coarsely, closely 

 punctate. Fifth ventral segment unimpressed, broadly truncate 

 at the apex. Tibiae with a few scattered spinules along their outer 

 edge. 



$. Prothorax smaller, less rounded at the sides, more narrowed 

 anteriorly. 



Length 3-3i mm. (^$.) 



Hab. Mexico, near the city, Pachuca {Hoge). 



Described from seven specimens from Mexico city, 

 apparently all females but one. Very near T. fuscicornis, 

 the decumbent cinereous hairs coarser, the antennae not 

 wholly infuscate, the prothorax more rounded at the sides 

 and in the male about as wide as the elytra. T. texanus 

 (Lee.) is an allied darker form, with more numerous setae. 



13. Trichochrous fuscicornis, n. sp. 



(J. Elongate, subcylindrical, shining; aeneo-piceous, the tibiae 

 and tarsi ferruginous; thickly clothed with shaggy pallid decumbent 

 hairs intermixed with long, suberect, blackish setae, the marginal 

 cilia very long. Head densely punctate, the epistoma smooth and 

 tumid in the middle, the eyes rather depressed; antennae short, 

 joints 5-10 transverse, serrate, 5 and 7 a little broader than 6 and 

 8, 9 and 10 about as wide as 7. Prothorax convex, broader than 

 long, narrowed from near the base, coarsely, closely punctate. 

 Elytra a little wider tlian the prothorax, subparallel in their basal 



