306 Mr. J. S. Balj's descriptions of new genera 



punctate-striate ; the interspaces nitidous, faintlj convex, 

 more strongly so towards the apex of the elytron, and on 

 the outer disk ; interspaces near the . outer margin sub- 

 costate; each interspace with a single row of very minute 

 punctures, visible only under a strong lens. 



C. labiata may be known from its congeners by its 

 small size and by its very finely-punctured thorax. 



Chcetocnema Haroldi. 



Anguste ovata, convexa, cuprea, subtus nigra, nitida, 

 antennis piceo-fulvis, his extrorsum pedibusque piceis ; 

 thorace granuloso, distincte punctato ; elytris ovalibus, 

 regulariter, sat fortiter punctato-striatis, interspatiis 

 nitidis, convexiusculis, ad latera convexis. 



Long. 1 lin. Hab. — Bogota. 



Vertex and front granulose, the former impressed with 

 a distinct fovea, the latter impressed on either side with a 

 few distinct punctures ; encarpge and carina entirely obso- 

 lete ; clypeus trigonate, slightly convex, 'its apex truncate, 

 separated from the upper face by a deep transverse groove; 

 antennse half the length of the body, four upper joints 

 piceous. Thorax nearly twice as broad as long ; sides 

 parallel, nearly straight, the anterior angles thickened, 

 oblique ; hinder ones slightly produced, acute ; upper 

 surface convex, granulose, distinctly but not closely punc- 

 tured. Elytra broader than the thorax, oval, strongly 

 punctate-striate ; interspaces shining, impunctate ; when 

 seen under a deep lens, very finely wrinkled. 



Chcetocnema amazona. 



Ovata, convexa, cuprea, nitida, subtus nigra, antennis 

 pedibusque obscure fulvis, illis extrorsum femoribusque 

 anticis quatuor piceis, femoribus posticis cupreis ; thorace 

 minute granuloso, tenuiter sed distincte punctato ; elytris 

 regulariter punctato-striatis, interspatiis ruguloso-granu- 

 losis, leviter convexiusculis, ad latera convexis. 



Long, f lin. Hab. — Amazons, Santarem. 



Vertex and front granulose, the latter impressed on 

 either side with a few deep punctures, sometimes arranged 

 in an oblique row ; encarpee and carina entirely obsolete, 

 clypeus trigonate, slightly convex, its apex obtusely trun- 

 cate, separated from the upper face by a transverse groove ; 

 antennge scarcely half the length of the body, five outer 



