and of uncharacterized species of HalticincB. 305 



transversely impressed close to the anterior margin, the 

 margin itself reflexed; its upper surface distinctly 

 thickened and forming an ill-defined carina towards its 

 apex, the latter obtuse, separated from the face by an 

 angular groove; antennie about half the length of the 

 body, three loAver joints obscure fulvous, the following two 

 piceous, the rest black. Thorax scarcely twice as broad as 

 long ; sides nearly parallel, obtusely rounded, the anterior 

 angles thickened, obtuse; upper surface granulose, finely 

 but not closely punctured; basal margin narrowly reflexed 

 on either side, impressed with a single row of deeper 

 punctures. Elytra broader than the thorax, oblong, 

 nitidous, strongly and deeply punctate-striate, the punc- 

 tures large, round ; interspaces convex towards the apex 

 and on the outer disk; on their surfaces a few very fine 

 punctures are to be seen when viewed under a strong lens. 

 Separated from C. amazona and braziliensis by its 

 narrower form. 



Cho&tocnema labiata. 



Ovata, convexa, nitida, subtus nigra, pedibus pallide 

 piceis, femoribus obscurioribus, femoribus posticis nigro- 

 seneo tinctis ; supra nigro-eenea, antennis pallide piceis, 

 extrorsum nigris ; thorace granuloso, minute et remote 

 punctato, lateribus intra marginem leviter incrassatis ; 

 elytris sat fortiter punctato-striatis, iuterspatiis nitidis, 

 convexiusculis, exteruis convexis. 



Long, f lin. Hah. — Columbia, Santa Martha. 



Head subtrigonate ; vertex and front granvxlose, im- 

 pressed on either side near the eye with several irregular 

 fovese ; grooves separating the interocular spaces from the 

 front very distinct; cl^^i^eus trigonate, the sides sinuate, 

 the apex obtusely truncate, sepai-ated from the upper face 

 by an indistinct groove; labrum large, piceous, strongly 

 exserted ; antennae more than half the length of the body, 

 six lower joints pale piceous, the rest black ; second joint 

 thickened, more than two-thirds the length of the first, 

 about equal in length to the third, the latter slender. 

 Thorax nearly three times as broad as long; sides parallel, 

 very obtusely rounded, the anterior angles oblicpie, thick- 

 ened, obtusely rounded ; upper surface transversely con- 

 vex, granulose, very minutely punctured; sides within 

 the lateral margin obsoletcly thickened. Elytra broadly 

 ovate, broader than the thorax, convex, strongly and deeply 



