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



A long series, including pairs from Morelia and Tehuan- 

 tepec. This species is distinguishable amongst its allies 

 by the very large deep fovea on the fifth ventral segment 

 of the male. It is less setose than T. setiger, the puncturing 

 of the upper surface is not quite so coarse, and the ventral 

 excavation is larger and very much deeper. A female 

 from Puebla with brown decumbent hairs included by 

 Gorham (loc. cit. p. 327) under T. nigroaeneus seems to 

 belong here. The double vestiture of the upper surface 

 distinguishes T . foveiventris from T. nigripes. 



26. Trichochrous nigripes, n. sp. 



Listrus punctatus, Gorh., Biol. Centr.-Am., Coleopt. iii, 

 2, p. 126 (part.). 



cJ. Moderately elongate, rather convex, shining; aeneous or 

 aeneo-piceous, the antennae and legs black or piceous; clothed 

 with decumbent cinereous hairs, without intermixed erect setae, 

 the marginal cilia short. Head densely punctate, the epistoma 

 without definite prominence ; antennae moderately long, joints 

 5-10 transverse, serrate, 5 a little larger than 6, 9 and 10 much wider 

 than 8, 11 ovate. Pro thorax transversely convex, rounded at the 

 sides, narrowed anteriorly, closely, moderately coarsely punctate. 

 Elytra scarcely wider than the prothorax, subparallel in their basal 

 half, closely, coarsely punctate. Fifth ventral segment truncate 

 at the apex, transversely depressed and shallowly foveate in the 

 middle behind. Tibiae obsoletely spinulose externally. 



$. Prothorax more narrowed anteriorly, not quite so wide as 

 tlie elytra, the latter widest beyond the middle. 



Length 2^-3^ mm. ((J$.) 



Hah. Mexico (Truqui), Omilteme, Soledad, Xucumanat- 

 lan, and Chilpancingo, in Guerrero, 4,600-8,000 feet 

 {H. H. Smith), Jalapa? {Hoge). 



A long series from Guerrero, the Mexican specimens 

 referred by Gorham to Listrus punctatus also belonging 

 here. A small aeneous insect, with the vestiture cinereous 

 and wholly decumbent, the marginal cilia short, the 

 prothorax short and convex, the elytral puncturing coarse 

 and close, the fifth ventral segment of the male transversely 

 depressed and shallowly foveate before the apex. The 

 puncturing of the upper surface is coarser in some examples 

 than in others. The complete absence of long erect bristly 

 hairs on the upper surface separates T. nigripes from 



