and species of South American Eumolpidcn, Sfc. 283 



strigate-punctate, front shining, impunctate, impressed in 

 the middle with a fine longitudinal groove ; clypeus wedge- 

 shaped, coarsely rugose-punctate ; its anterior margin 

 angulate-emarginate, its apical margin obsolete ; antennae 

 more than half the length of the body, rufo-piceous, the 

 five outer joints thickened and slightly compressed, black. 

 Thorax twice as broad as long ; sides straight and obliquely 

 converging from the base nearly to the middle, thence 

 rounded and converging to the apex, the anterior angles 

 acute; basal margin oblique on either side, the medial lobe 

 not produced, regularly rounded ; disk convex, strongly 

 deflexed on either side at the apex, sparingly impressed 

 with deep punctures. Scutellum pentagonal, not longer 

 than broad, the apical angle very obtuse. Elytra rather 

 broader than the thorax, convex, broadly but slightly de- 

 pressed transversely on the outer disk below the humeral 

 callus, rather deeply punctate-striate, the punctures rather 

 distantly placed on the stria3, those on the transverse 

 depression larger and deeper than elsewhere ; interspaces 

 plane, impunctate. 



Clialcoplacis femorata. 



Rotundata, valde convexa, subgibbosa, subtus nitida, 

 rufa, prothorace, femoribus anticis apice, posticis quatuor 

 basi et apice, tibiis tarsisque nigris ; siqjra subopaca, 

 metallico-olivacea, antennis dimidio corporis vix longiori- 

 bus, fulvis, extrorsum nigris ; capite thoraceque minute 

 granulosis, hoc subcrebre punctato ; elytris viridi-cyaneis, 

 minute granvilosis, subseriatim punctatis. 



Long. 2^ lin. 



Hab. — Amazons ; collected by Mr. Bates. 



Head deeply immersed in the thorax, closely granulosa, 

 very finely but not closely punctured, lower face sparingly 

 clothed with very short sericeous hairs ; front impressed 

 with a very fine longitudinal groove ; clypeus depressed, 

 subpentangular, its apex obtuse, its anterior margin con- 

 cave-emarginate ; antennte about half the length of the 

 body, the five outer joints very slightly thickened, black, 

 the six lower ones pale fulvous ; labrum and palpi fi^ilvous, 

 the apical joint of the latter, together with the jaws, black. 

 Thorax nearly three times as broad as long ; sides rounded 

 and converging from base to apex, the hinder angles acute, 

 the anterior ones obtuse ; disk minutely granulose, covered 

 (but not very closely) with small but distinct round punc- 



