and species of South Ajnerican EumolpidcB, Sfc. 285 



clothed with very short adi^ressed fulvous hairs ; very 

 finely granulose, front impressed with a fine longitudinal 

 grooA^e ; clypens transverse, depressed, distinctly punc- 

 tured ; labrum, palpi and antenn[B fulvous, the last more 

 than half the length of the body, filiform, the five outer 

 joints indistinctly thickened, stained at their apices with 

 black. Thorax nearly three times as broad as long; sides 

 rounded and converging from base to apex, very indis- 

 tinctly angled behind the middle, the hinder angles acute, 

 the anterior ones subacute; disk shining, very minutely 

 but not closely punctured, metallic blue ; the lateral border 

 opaque, minutely granulose, metallic green, the apical 

 margin also narrowly edged with the same colour. Scu- 

 tellum subpentangular, metallic green, sparingly clothed 

 with adpressed sericeous hairs. Elytra scarcely broader 

 than the thoi'ax, convex, i-ather strongly punctured, the 

 punctures placed without order over the general surface, 

 but arranged in longitudinal rows at the apex and along 

 the extreme outer bordex*, each puncture with a single, 

 very short adpressed hair, visible only under a deep lens ; 

 the extreme apex tinged with metallic green ; inflexed 

 limb concolorous with the disk, nearl}^ plane, concave only 

 at its base. 



Chalcoplacis ingenua. 



Rotundata, valde convexa, subgibbosa, subtus cum 

 antennis fulva, nitida, prothorace mesosternoque nigris; 

 supra subopaca, metallico-viridis, minute gramdosa; capita 

 thoraceque minute punctatis; elytris coeruleo tinctis, prope 

 suturam sat regulariter, seriatim, ad latera magis confuse 

 punctatis. 



Long. 2 lin. 



Hab. — Amazons ; collected by Mr. Bates. 



Head deeply immersed in the thorax, very finely granu- 

 lose, sparingly clothed with adpressed fidvous hairs, finely 

 but not closely punctured, front impressed with a very fine 

 longitudinal groove ; clypeus wedge-shaped, its anterior 

 border concave-emarginate, its apex ill-defined ; rufo- 

 fulvous, stained at the apex Avith metallic green ; labrum 

 and palpi fulvous ; jaws piceous ; antennre scarcely more 

 than half the length of the body, pale fulvous, filiform, the 

 five outer joints indistinctly thickened, stained at their 

 apices with piceous. Thorax more than twice as broad 

 as long ; sides rounded and converging from base to apex. 



