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



One specimen, distinguishable at once by the single long 

 curved hook or claw on each side of the prothorax towards 

 the apex, the hook here replacing the row of small marginal 

 teeth present in T. denticulatus. 



3. Trichochrous crenulatus, n. sp. (Plate II, fig. 23, c^, 

 prothorax.) 



(J. Elongate, parallel-sided, shining; black, with a brassy lustre, 

 the elytra cyaneous, the tibiae and tarsi wholly or in great part 

 ferruginous ; thickly clothed with pale brownish shaggy hairs inter- 

 mixed with long erect black setae. Head densely punctate; 

 antennae short, joints 7-10 broad and strongly transverse. Pro- 

 thorax considerably longer than broad, parallel-sided, the sides 

 arcuately converging at the apex and closely crenulate to near the 

 base, the apex arcuate -emarginate in the middle, the hind angles 

 obliterated ; closely, rather finely punctate. Elytra a good deal 

 wider than the prothorax, subparallel in their basal half; rugose 

 and densely punctate. Beneath densely punctate, the anterior 

 portion of the prostemum almost smooth, the narrow post-coxal 

 portion dentiform ; fifth ventral segment truncate at the apex. 

 Tibiae rough, feebly spinulose and densely setose externally, the 

 anterior pair curved. Anterior femora compressed and hollowed 

 at the middle within. 



$. Prothorax small, transverse, narrowing from the base, obso- 

 letely crenulate at the sides ; legs shorter and more slender. 



Length 4-4i mm. (<S^.) 



Hah. Mexico, Guadalajara {^ $), Chilpancingo {^), and 

 Zapotlan ($) (Hoge). 



Six males and three females, the latter, as in T. denticu- 

 latus, differing greatly from the males in the shape and 

 armature of the prothorax. The cyaneous elytra and 

 ferruginous tibiae and tarsi are, however, characters 

 common to the two sexes. 



4. Trichochrous fulvipes. 



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

 2, p. 328. 



Hab. Mexico, Aguas Cahentes city {Hoge) ; ? ? Guate- 

 mala. 



Gorham described T. fulvipes from a single ($) example 

 from " Guatemala." This locaUty is almost certainly 

 incorrect, due to some mistake in labelhng, no insect of 



