aind Central American Malachiidae and Melyridae. Ill 



various allied forms. The Guerrero specimens are taken 

 as the types. 



27. Trichochrous viridulus, n. sp. 



$. Elongate, narrow, shining; greenish aeneous, the antennae 

 black, the legs piceous; clothed with wholly decumbent, rather 

 long, pallid hairs, the marginal cilia short and inconspicuous. Head 

 bi-impressed in front, finely punctate, the epistoma smooth and 

 tumid in the middle; antennae very short, joints 5-10 transverse, 

 5 larger than 6, 9 and 10 much broader than 8, 11 ovate. Prothorax 

 transverse, a little narrower than the elytra, narrowed from near 

 the base ; finely punctate, except along the smooth incomplete 

 median line. Elytra long, subparallel in their basal half, somewhat 

 depressed ; closely, rather finely punctate, the punctuation becom- 

 ing coarser at the base. Legs slender; tibiae distinctly spinulose 

 externally. 



Length 3j mm. 



Hab. Mexico {Truqui, in Mus. Brit.). 



One female. This insect is not unlike Listrus flavicornis ; 

 but the antennae are very differently formed, the tibiae 

 are distinctly spinulose, the posterior tarsi are much shorter, 

 the prothorax is larger and more shining, etc. It cannot 

 be compared with any of the other species of Trichochrous 

 here enumerated. The puncturing of the upper surface is 

 comparatively fine. 



28. Trichochrous conicus, n. sp. 



Pristoscelis nigroaeneus, Gorh., Biol. Centr.-Am., Coleopt. iii, 

 2, p. 327 (part.). 



$. Elongate, subconical, shining; nigro-aeneous, the antennae 

 and legs piceous, the tibiae and tarsi obscure ferruginous in one 

 specimen; clothed with rather long, coarse, decumbent, cinereous 

 hairs, without intermixed erect setae, the marginal cilia curled and 

 long. Head small, densely punctate, the eyes not prominent; 

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

 5 broader than 6 or 8, 9 and 10 much wider than those preceding, 

 11 ovate. Prothorax not much broader than long, campanulate, 

 closely, finely punctate. Elytra long, much wider than the pro- 

 thorax, widening to beyond the middle, the marginal carina just 

 visible from above; closely, moderately coarsely punctate, the 

 interspaces transversely wrinkled. Tibiae rough and feebly spinu- 

 lose. 



Length (with head extended) 4-4^ mm. 



