Platyxin.e 27 



wide as the prothorax, the eyes well developed and prominent; 

 posterior puncture smaller than the anterior as in the preceding 

 group, though not much further from the eye than the anterior; 

 palpi obtusely pointed; antennae nearly half as long as the body, 

 thick distally, slender basally, the third joint but little longer than 

 the fourth; prothorax a* fourth or fifth wider than long, the sides 

 very evenly and moderately rounded, becoming slightly sinuate 

 toward the basal angles, which are sharp and prominent at tip; 

 base broadly arcuate from side to side, equal in width to the moder- 

 ately sinuate apex, the apical angles subprominent though blunt at 

 tip; surface very moderately convex, virtually smooth, with feeble 

 transverse impressions and a fine stria extending only between them; 

 foveae feebly impressed, distant from the sides; elytra only a third 

 longer than wide, fully two-thirds wider than the prothorax, the 

 sides evenly arcuate, not more so basally, the apical sinus not very 

 long, distinct, the tips broadly rounded; striae fine, sharp, impunc- 

 tate, rather deep, the scutellar short, parallel; intervals flat; dorsal 

 punctures three, the two anterior at the third, the posterior near 

 the second, stria; hind tarsi finely grooved externally. Length 

 (cf 9) 8.2-9.2 mm.; width 3.5-3.8 mm. Mexico (Tres Marias, 

 Morelos), — Wickham *curtipeniiis n. sp. 



This species would inevitably be considered an Anchomenus, 

 even in the work of Mr. Bates, but I cannot identify it with any- 

 thing described or cited by that author in the "Biologia" or in 

 any subsequent work. In general appearance it resembles nothing 

 else known to me at present. 



Group III {guerrerensis) 

 Subgenus Plocodes nov. 

 Colpcdes Chaud., Bates et al., nee MacLeay 

 The type species here made known under this subgeneric name, 

 cannot resemble closely the Indian genus named Colpodes by 

 MacLeay, though custom at present seems to demand that almost 

 any neotropical Platynid shall be considered a Colpodes. In 

 Colpodes, as represented by the Javan brunneus MacL., the men- 

 tum is said to be edentate; the tooth in Plocodes is long and con- 

 spicuous. In guerrerensis the met-episterna are greatly elongated, 

 the humeri strongly rounded and the hind wings well developed; 

 the anterior tibiae are canaliculate externally, the tarsi not medially 

 sulcate above, the elytral tips rounded, the striae fine and the pro- 

 thorax subcordate. These characters, in the arrangement given 

 by Chaudoir (Ann. F. 1878, p. 377), would seem to bring it near 



