106 Mr. G. C. Champion's Revision of the Mexican 



19. Trichochrous clavatus, n, sp. 



$. Moderately elongate, subcylindrical, rather convex, shining; 

 nigro -aeneous, the antennae and legs piceous ; sparsely clothed with 

 intermixed decumbent and semierect longer bristly hairs, the latter 

 very long at the sides of the prothorax and elytra. Head small, 

 densely punctate ; antennae short, much widened outwards, joints 

 6-10 strongly transverse, serrate, 5 small, 6 and 7 equal, wider 

 than 6, 8-10 much broader than 7, 11 ovate, about as broad as long. 

 Prothorax transverse, the sides arcuately converging anteriorly and 

 subparallel towards the base; closely, very finely punctate, a little 

 smoother along the median line. Elytra moderately long, consider- 

 ably wider than the prothorax, parallel in their basal half, the 

 marginal carina scarcely visible from above, closely, rather coarsely 

 punctate. Tibiae rough, the anterior pair distinctly spinulose. 



Length 3j mm. 



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



One female. Very different from any of its Mexican 

 allies, and recognisable by the five dilated outer joints of 

 the antennae, the fifth joint being small; the short, very 

 finely punctured prothorax; and the parallel-sided, rather 

 broad elytra. 



20. Trichochrous femoralis. 



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

 2, p. 328 {nee * Casey). 



Hab. Mexico, Puebla. 



The type of this insect is a female. It is compared by 

 Gorham with T. nigroaeneus, from which it may be separated 

 by its broader form, narrow epipleura, rufescent tibiae 

 and tarsi, densely, finely punctate prothorax, less coarsely 

 punctate elytra, much more abundant black setae, structure 

 of the antennae, etc. The head is very densely punctured, 

 the epistoma flattened. The antennae ($) are short ; joints 

 7-10 are strongly transverse, becoming progressively wider, 

 5 shghtly larger than 6, 11 stout, ovate. The length is 

 4j^ (not 5) mm. 



21. Trichochrous aeneijpennis. 



Pristoscelis aeneipennis, Gorh., Biol. Centr.-Am., Coleopt. 

 iii, 2, p. 327. 



* Casey's name femoralis is preoccupied : caseyi is here substituted 

 for it. 



