506 ]\rr. M. Jacoby 07i 



reniform, the labrum and palpi fulvous, aiitenna3 Avitli the lower 

 eight joints fulvous (the rest wanting), the third joint one-half longer 

 than the fourth, the latter equal in length to the sixth joint; thorax 

 more than twice as broad as long, the sides rounded with an extremely 

 narrow margin, the surface convex, finely and sparingly punctured ; 

 scutellum impunctate; elytra very convex, without basal depression, 

 more strongly punctured than the thorax, the punctures arranged 

 in closely approached rather regular rows of equal size throughout, 

 the interstices not raised, the shoulders prominent ; legs and abdomen 

 bright fulvous, the breast dark violaceous. 



JTah. Bolivia. 



Easily known by the system of coloration ; in one of my 

 specimens, the head and the breast are metallic green ; 

 the species is closely allied to C. tihialis, Lef., but is smaller, 

 the punctuation of the elytra is much closer and the 

 antenna3 and legs are entirely fulvous. 



Colaspoides iKiraguayensis, sp. n. 



Elongate and parallel, black, the liead and thorax dark fulvous, 

 strongly punctured, elytra blackish with violaceous tint, strongly 

 and closely punctured, the interstices semi-rugose, the apical portion 

 with a short acute costa at the sides. 



Length 7 millim. 



Head strongly and not very closely punctured, with a central 

 longitudinal groove, clypeus transverse, indistinctly separated from 

 the face, sparingly punctm-ed, antennce long and slender, black, the 

 basal four joints fulvous ; thorax twice as broad as long, the sides 

 rounded, the anterior angles produced, the surface strongly and 

 remotely punctured, fulvous ; scutellum with a deep fovea, black ; 

 elytra elongate and subcylindrical, violaceous black, very strongly 

 and closely punctured, the interstices slightly rugose and here and 

 there with traces of longitudinal smooth lines, the apical portion 

 with a distinctly raised short costa near the sides ; below and the 

 legs black ; anterior margin of the pro-thoracic episternum strongly 

 convex ; prosternum longitudinally sulcate at the sides. 



Hah. Paraguay. 



Quite distinct in coloration and the presence of the 

 single elytral costa from any other South American species 

 of the genus; tliere are four specimens, apparently of both 

 sexes, contained in my roUectiou. 



