and Central American Malachiidae and Melyridae. 109 



subparallel in their basal half; the marginal carina rather promi- 

 nent and just visible from above, the epipleura narrow; closely, 

 coarsely punctate. Fifth ventral segment truncate at the apex, 

 with a shallow triangular depression in the middle behind. Tibiae 

 rough and setose. 



$. Prothorax smaller, more narrowed anteriorly ; elytra broader, 

 widest beyond the middle. 



Length 2|-3i mm. (c^?.) 



Hab. Mexico, Oaxaca (SalU). 



Three males and two females. Smaller and less elongate 

 than T. nigroaeneus, the prothorax shorter, more convex, 

 and more rounded at the sides, the elytral margins less 

 expanded, the epipleura narrow. The coarse puncturing 

 and the very long intermixed erect hairs on the upper 

 surface distinguish T. setiger from various other alUed 

 forms. In one of the two females the interspaces between 

 the punctures on the head and prothorax are densely 

 alutaceous and opaque. 



25. Trichochrous foveiventris, n. sp. 



(J. Elongate, narrow, feebly convex, shining; nigro-aeneous or 

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

 with rather long, decumbent, cinereous or brownish hairs, the head, 

 prothorax, and sides of the elytra with intermixed erect, blackish, 

 bristly hairs, the marginal cilia moderately long and curled. Head 

 densely punctate, the epistoma smoother and slightly tumid in the 

 middle ; antennae moderately long, rather slender, joints 5-10 serrate, 

 5 triangular and larger than 6, 6-10 transverse, 9 and 10 a little 

 wider than 8, 11 ovate. Prothorax transverse, rounded at the 

 sides, narrowed anteriorly, the base distinctly sinuate laterally; 

 closely, rather finely punctate. Elytra a little wider than the 

 prothorax, subparallel in their basal half, with the marginal carina 

 somewhat prominent and visible from above; closely, rugosely 

 punctate. Fifth ventral segment truncate at the apex, with a 

 large, deep, foveiform excavation extending nearly the whole length 

 of the segment. Tibiae rough, setulose. 



$. Prothorax narrowed from near the base; elytra broader and 

 less parallel ; antennae shorter and more slender. 



Length 3-3j mm. 



Hob. Mexico {Truqui, in Mus. Brit. ; Coffin, in Mus. 

 Oxon.), Moreha in Michoacan [^ $], Mexico city {Hoge), 

 Tehuantepec [c^ $], {coll. Fry, in Mus. Brit.). 



