and Central American Malachiidae and Melyridae. 105 



hairs with a few erect hairs intermixed, the marginal cilia long. 

 Head very sparsely, finely punctate, the epistoma with a small, 

 smooth, tuberculif orm prominence ; antennae long, serrate from the 

 fourth joint, 4-10 triangular, 8-10 longer than broad, 11 elongate- 

 ovate. Prothorax broader than long, convex, rounded at the sides, 

 sinuously narrowed anteriorly; sparsely punctate on the disc, the 

 punctures becoming more crowded towards the sides. Elytra 

 broader than the prothorax, subparallel ; closely, moderately coarsely 

 punctate. Legs slender, long; tibiae sparsely and very distinctly 

 spinulose externally. 



$. Broader, the elytra widest beyond the middle; antennae 

 almost wholly testaceous (joint 1 excepted), much shorter, more 

 slender, feebly serrate, joint 5 distinctly wider than 4 or 6, 9 and 10 

 about as broad as long. 



Length 3 mm. ((J$.) 



Hab. Mexico, Northern Sonora (Morrison). 



One pair, found placed with T. fuscovittatus ( = suturalis, 

 Gorh., nee Lee.) in the " Biologia " collection, the male 

 partially abraded, the female in good condition. A slender, 

 moderately elongate, cinereo-pilose, aeneo-piceous insect, 

 with unusually elongate antennae in the male, the tibiae 

 and tarsi and the basal joints of the antennae (the first 

 excepted) rufo-testaceous. The antennae are serrate from 

 the fourth joint in the male and from the fifth joint in the 

 female. 



18. Trichochrous salvini. 



Pristoscelis salvini, Gorh., Biol. Centr.-Am., Coleopt. iii, 2, 

 p. 124. 



(J. Intermediate tarsi armed with a stout blunt spur at the inner 

 apical angle. 



Hab. Guatemala, summit of the Volcan de Fuego. 



A narrow, elongate, aeneo-piceous insect, with the pro- 

 thorax oblong, densely, finely punctate (except along an 

 incomplete smooth median hne) ; the elytra parallel-sided, 

 densely, rather coarsely punctate; the antennae rather 

 slender, joints 5-10 transverse, feebly serrate, 5 shghtly 

 larger than 6 ; the surface sparsely clothed with fine decum- 

 bent brownish pubescence intermixed with long fine erect 

 hairs, these latter being conspicuous on the prothorax and 

 along the margins of the elytra ; the legs slender, scarcely 

 stouter than in Listrus, the spinules only just traceable. 



