224 Memoirs on the Coleoptera 



rounded, the apical bluntly rounded; base transverse, rounding laterally, 

 very little wider than the feebly sinuate apex; surface evenly and slightly 

 convex throughout, very smooth and impunctate, the transverse im- 

 pressions very feeble, the stria fine, subentire; fovese small, narrow, 

 feebly impressed, linear and at some distance from the sides; elytra 

 elongate-oval, three-fifths longer than wide, two-fifths wider than the 

 prothorax, the sides not more arcuate at base; apex gradually rounded, 

 without trace of sinus; basal margin sinuate, making a very sharp and 

 acute angle with the sides; striae fine, with very feeble and obscure 

 micro-punctulation; intervals perfectly flat, the third with four small 

 punctures, all at the third stria; under surface black, shining, the legs 

 moderate. Length (9 ) 8.0 mm.; width 3.0 mm. Mexico (Tres Marias, 

 Morelos) , — -Wickham. 



I can find no published description according in any way with 

 this very distinct species and therefore regard it as undescribed. 

 The tarsal claws are long and have within a distinct fringe of 

 rather long spicules. 



Onypterygia Dej. 



Onychopterygia G. & H. (emend.) 



In many respects this remarkable neotropical genus is allied 



closely to the Platynid series of genera, but the tarsal claws are 



strongly and closely pectinate beneath. The integuments are 



more or less brilliantly metallic in color and the genus therefore 



constitutes one of the more conspicuous types of the Carabidae. 



The species are rather numerous. Hopfneri Dej., is a larger species, 



having the cupreous-red and uniformly colored elytra dull in lustre, 



in a way foreign to most of the others; my representatives, taken 



by Baron, in Guerrero, are apparently larger than Dejean's type^ 



measuring as much as 14 mm. in length, but they seem to satisfy 



his description otherwise. Tricolor and some others have the 



elytral apices spiniform. The following seems to be a hitherto 



undescribed small species: 



*Onypterygia cupricauda n. sp. — Outline elongate-suboval, strongly 

 convex and highly polished throughout, the head and pronotum black, 

 with feeble bluish lustre; elytra brilliantly green, gradually cupreous 

 apically; under surface obscure rufo-ferruginous, the legs piceous, the 

 femora more nearly black; head elongate, rhomboidal, nearly three- 

 fourths as wide as the prothorax, with rather prominent and well de- 

 veloped eyes; anterior impressions small, deep, linear; mandibles small, 

 nearly straight except at tip; mentum tooth sharply triangular; palpi 

 piceous, pale at tip, the last joint fusoid, gradually pointed, as long as 

 the third and a little thicker; antennae slender, fusco-ferruginous, the 



