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



the middle in front ; antennae short, joints 5-10 triangular, becoming 

 progressively wider, transverse, 11 ovate, narrower than 10. Pro- 

 thorax transverse, as wide as the elytra, roimded at the sides, a 

 little narrowed anteriorly, the angles obliterated; rather sparsely 

 punctate, often with a narrow, smooth, impunctate space down the 

 middle behind. Elytra subparallel, closely punctate, the punctures 

 coarse at the base, becoming much finer towards the apex, the 

 marginal carina moderately prominent. Fifth ventral segment 

 unimpressed, truncate at the apex. Tibiae sparsely, finely spinulose 

 externally. 



$. Prothorax less rounded at the sides and more narrowed 

 anteriorly; elytra somewhat widened posteriorly. 



Length S^-S^ mm. (^^.) 



Hah. Mexico, Pachuca and Zacualtipan in Hidalgo 

 {Hoge). 



A long series from Pachuca. Recognisable by the red 

 legs and antennae, the latter being moderately serrate 

 from the fifth joint, the rather sparse, wholly decumbent 

 vestiture (the erect setae altogether wanting), the aeneo- 

 piceous shining surface, the tumid median portion of the 

 epistoma, etc. 



16. Trichochrous mexicanus. 



Trichochrous mexicanus, Casey, Ann. N. York Acad. Sci. 

 viii, pp. 472, 515. 



Hab. North Mexico {coll. Levette). 



An oblong, strongly convex, feebly shining, black form, 

 with rufescent legs and palhd antennae, and rather long, 

 coarse, subdecumbent pubescence (which becomes darker 

 and less conspicuous in an elongate dark streak on each 

 elytron) intermixed with numerous long erect blackish setae ; 

 the prothorax sub globular ly convex, nearly as long as broad, 

 and coarsely, closely punctate; the elytra slightly wider 

 than the prothorax, parallel, coarsely, densely punctate. 

 Described from two males. Length 2| mm. Casey speaks 

 of this insect as wholly different from any of the N.- American 

 species described by him. He places T. mexicanus near 

 T. rufipennis, Lee. It is unknown to me. 



17. Trichochrous diver sicornis, n. sp. 



(J. Moderately elongate, narrow, shining; aeneo-piceous, tne 

 joints 2-4 of the antennae and the legs rufo-testaceous, the femora 

 slightly inf uscate ; sparsely clothed with long, fine, pallid, decumbent 



