and Central American Malachiidae and Melyridae. 107 



Hah. Mexico, Durango. 



The types (2) of T. aeneipennis are males. This is a 

 species with the fifth antennal joint triangular and much 

 larger than the sixth, the joints 6 and 8 subequal, 9 and 10 

 broader and strongly transverse, 9-11 forming a well- 

 defined club. The entire upper surface in aeneous, thickly 

 clothed with intermixed erect black setae and decumbent 

 cinereous hairs ; the prothorax is narrowed anteriorly, 

 sinuate laterally at the base, and so closely punctate as 

 to appear reticulate; the elytra are broader than the 

 prothorax, somewhat acuminate, sharply margined and 

 with broad epipleura, and coarsely, closely punctate; the 

 fifth ventral segment is truncate at the apex and unim- 

 pressed; the tibiae are rather slender, and set with long 

 bristly hairs. The length is 4| (not 5) mm. 



22. Trichochrous nigroaeneus. 



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

 2, p. 124 (part.) {nee p. 327). 



(J. Elongate, aeneo-piceous, shining; somewhat thickly clothed 

 with intermixed decumbent cinereous hairs and long, erect, black 

 setae, the marginal cilia very long. Head short, closely punctate; 

 antennae with joint 5 larger than 6, triangular, 6 and 8 subequal, 

 9 and 10 broader and strongly transverse, 9-11 forming a definite 

 club. Prothorax a little broader than long, rapidly and sinuously 

 narrowing from about the basal third, coarsely, rather closely 

 punctate. Elytra long, slightly wider than the prothorax, some- 

 what acuminate posteriorly, with the margins sharply carinate 

 and very prominent as seen from above, the epipleura broad, 

 gradually narrowing towards the apex; coarsely, closely punctate. 

 Beneath densely, very finely punctate; fifth ventral segment 

 unimpressed, truncate at the apex. Tibiae with a few minute 

 scattered spinules along their outer edge, and also set witli long 

 hairs. 



9. Prothorax strongly transverse; antennae shorter. 



Length 3^-4 mm. (c^$.) 



Hah. Mexico {Truqui, in Mus. Brit. ; Mus. Oxon. : 

 cJ$), Jalapa(ffo^e: ^^). 



Gorham confused various species under this name, but 

 he selected and labelled a male from Jalapa as the type, 

 and there are various other Mexican examples found by 

 Truqui in the British Museum. T. nigroaeneus is very 



