Genera and Species of Coleoptera. 109 



narrower behind, its anterior angles not produced although somewhat 

 acute, a tubercle at the side, the disc very concave anteriorly, with a 

 deeply impressed, interrupted ring in the centre, behind which is an oval 

 depression terminating posteriorly in an elevated tubercle, which again 

 has on each side a short but very deep and narrow groove ; elytra elon- 

 gato-ovate, broader than the prothorax, deeply and irregularly sti-iated, 

 the interstices, except the two sutiu-al on each side, with very strong, 

 elevated, compressed tubercles, particularly at the base and inner row, 

 becoming smaller and more conical externally, — each elytron, before the 

 middle and on the outside of the second sutural stria, with two pellucid 

 granules of an amber colour ; body beneath with rather shallow, large, 

 and somewhat remote punctui'es. Length 2.} lines. 



The upper part of the labium in the figure is intended to repre- 

 sent its cilia : as it stands, it only shows their position. 



Boihrideres latus. 



B. niger, latior ; prothoracis angulis anticis productis, utrinque tricostatis. 



Hub. Brazil (Santai'em). 



Wider than the last, black, opake ; head rather coarsely and deeply 

 punctured ; prothorax less coarsely punctured, rather wider than long, 

 emarginate in front to receive the head, its anterior angles slightly 

 produced, with three strong ribs on each side, the inner occupying 

 the anterior half only, the outer temiinating in the anterior angle, the 

 disc lai'gely impressed with a bilobed protuberance in the centre, and 

 opening out behind into a deep chaimel, which is bounded on each side 

 by an oblique protuberance ; elytra broader than the prothorax, strongly 

 ribbed, the interstices with shallow, somewhat remote pimctures, the 

 ribs seven on each elytron, the external and the two sutm-al ones less 

 marked than the others ; antennae not longer than the breadth of the 

 head ; palpi feiTuginoiis ; body beneath remotely pimctured. Length 

 3 lines. British Museum. 



SosYLTJS [ColydiidaeJ. 

 Erichson, Natui-. der Insekt. Deutschl. iii. p. 288. 



Sosylus sulcatus. (PI. VI. fig. 1.) 



S, niger, subnitidus ; prothorace medio lineolato ; el}iais apice obtusis, in 

 singulo quadrisidcatis. 



Hab. Brazil (Para). 



Black and slightly shining ; head finely punctured, regular, a little 

 convex in fi'ont ; prothorax oblongo-ovate, twice as long as the head, 

 finely punctured, a very delicately elevated line along the middle, ter- 

 minating posteriorly between two short linear impressions ; scutellum 

 very narrow ; elytra nearly parallel, obtuse at the apex, each with five 

 elevated costte having between them four broad deep gi'ooves, the two 



