142 Mr. D. Sharp's Cuiitributiuns to ihc 



depressed, and Avitli the lund body narrower. The an- 

 tenna; are longer than the head and thorax, slender, not in 

 the least thickened towards the extremity ; tlie three basal 

 joints are ])itehy, the others pale yellow ; the 3rd joint is 

 longer than the 2nd, 4th about as long as the 2nd : ii-om 

 this to the extremity the joints dittl-r but little from one 

 another; llth joint rather shorter than the lOth, its 

 length two or three times its breadth. Mandibles and 

 palpi pitchy red. Head about the width of the thorax, 

 suborbicular, covered Avith numerous closely placed, large 

 jMuictures, except the disc and a transverse space behind 

 the labrum, which are free from punctures. The eyes 

 rather larue. Thoi-ax nearly one and a-half times as long 

 as broad, narrowed behind ; the front angles much de- 

 flexed and rounded, strongly sinuate at the sides ; the 

 hinder angles obtuse and rounded, the upper sui-fiice with 

 two irregular lines of large punctures along the middle, 

 leaving a broad space between them impunctate, and with 

 numerous other large ])unctures at the sides, scarcely 

 leaving the two middle lines of punctures distinct from 

 the others, the punctures more numerous about the front 

 than at the hinder })art. Scutellum black, large, densely 

 and distinctly punctured. Elytra about as long as the 

 thorax, and considerably Avider, dark bluish, rather 

 roughly and moderately closely punctured. Hind body 

 elongate, a little narrowed to the extremity, black, with 

 very faint bluish reflections; the 6th segment reddish, the 

 7th yellow ; the base of each segment is closely and finely 

 punctured, the apex more spaiingly ; the hind part of the 

 Gth and the whole of the 7th segment finely and sparingly 

 punctured. Legs black, rather long, the hind tibiaj 

 especially long ; the four hinder tarsi with the joints a 

 little dilated and imeven ; the 1st joint rather stout and 

 nearly linear, about as long as the two following together; 

 the second joint triangular, the internal angle more pro- 

 duced than the outer one ; 3rd joint only half as long as 

 the second, distinctly lobed, especially on the inner side ; 

 4th joint rather narrower than, but nearly as long as the 

 3rd, its outer angle distinctly produced ; the tarsi are 

 pitchy, their terminal joints reddish. 

 Ega ; one specimen, $ . 



Trigonopselaphus {Trigonophorus, Xord.). 

 This genus is also peculiar to South America ; it con- 

 sists at present of about a dozen species ; some of its 



