144 Mr. D. Sliarp'ri Contributions to the 



it is of a (lull black colour, with the liind margin of the 

 6th segment, as well as the whole of the 7th and 8th, dull- 

 orange colour, it is sparingly punctured, the punctures 

 more numerous on the 6th segment than elsewhere, and 

 each bearing a rather stout hair. Legs dull blackish. 

 St. Paulo ; one specimen, 2 . 



2. Tri(jonopsel(ipJius inntator, n. sp. Niger, antennis 

 piceis, capite thoracecjue viridi-cyaneis, elytris anieis forti- 

 ter punctatis; abdomine nigro-i\3neo, apice testaceo. Long. 

 Corp. 5^ lin. 



Antenn;v short and rather stout, \\ lin. in length, of an 

 obscure-reddish colour ; 3rd joint about as long as 2nd, 

 4th — 10th each a little shorter than its predecessor, 

 each much narrowed towards the base, especially on its 

 inner side; the 4th about as long as broad, 8 — 10 rather 

 strongly transverse, 11th rather short, acuminate, its apical 

 portion yellowish, being paler than the basal portion. 

 Palj)i blackish, the maxillary ones slender; the last joint 

 of the labial much dilated, the middle joint not so long as 

 broad. Mandibles short, very thick, but at the extremity 

 slender and very acuminate ; labrum large, quite bifid, 

 pitchy. Head small, a good deal narrower than the 

 thorax ; the eyes large and occupying most of the side ; 

 the vertex very truncate, so that the neck is abrupt and 

 rather slender ; it is of a greenish-blue colour, not much 

 shining ; it is coarsely punctured, the punctures absent 

 about the middle ; on the underside it is black, shining 

 and impunctate, and the gena? are distinctly margined. 

 Thorax distinctly narrower than the elytra, about as long 

 as broad, truncate in front, roimded at the base, the sides 

 a little curved ; it is similar in colour to the head, and is 

 coarsely and sparingly punctured, the punctures being 

 absent from a space along the middle. Scutellum large, 

 dull blackish, rather coarsely punctured. Elytra slightly 

 longer than the thorax, of a shining-brassy colour, coarsely 

 punctured, and only sparingly pubescent. Hind body 

 blackish, with the 7th segment and the hind margin of the 

 6th yellow ; the basal segments i-ather brassy, the oth and 

 6th very densely punctured and clothed with a remarkably 

 dense, coarse, black pubescence, the basal segments more 

 sparingly punctured ; the anal styles nearly black except 

 at the base. Legs black, with the tibi;\3 and tarsi pitchy ; 

 the front tibiae broad, their tarsi strongly dilated ; hind 



