250 j\Ir. D. Sliar})'s Contrihntums to the 



stouter than the others, nearly as long as 2, 3 and 4 

 together; 3rd scarcely so long as 2nd, 10th quite as long 

 as broad. Labrum with a small notch, in the middle on 

 either side of Avhich is a proniinent spine ; the inner side 

 of this spine is dilated. Mandibles pale red, elongate, 

 irregularly toothed, the left one \\\x\\ a broad, only little 

 ])roniinent tooth in the middle, and between this and the 

 base with a very minute tooth, and above the middle 

 tooth with a small sharp tooth ; the right one with three 

 small approximate teeth in the middle, the upper one of 

 which is very obsolete. Head reddish, broad, rather 

 broader than the elytra, the clypeus in front distinctly 

 impressed on each side ; the hind angles nuich rounded, 

 the surface extremely densely, finely and indistinctly 

 punctured. Thorax rather longer than broad, its greatest 

 breadth in front of the middle, greatly narrowed to the 

 front, and a good deal narrowed towards the base ; ex- 

 tremely finely carinate along the middle, the carina being 

 only distinctly visible near the base, in conserpiencc of the 

 surface there being a little flattened or depressed on either 

 side ; colour and punctuation similar to the head. Elytra 

 rather longer than the thorax, fuscous with the apex 

 yelloAV, their punctuation extremely dense and fine. Hind 

 body broad, but a good deal contracted at the base, reddish 

 but infuscate towards the extremity, very densely, finely 

 and indistinctly punctured. Legs yellow ; tarsi rather 

 stout but elongate, the hind ones being quite half as long- 

 as the tibiaj. 



In the male, segments 3 — 6 of the hind body are on 

 the luiderside impressed along the middle, the hind margin 

 of the 6th segment is bi'oadly emarginate ; the hind 

 margin of the 7tli segment is also broadly emarginate, and 

 in the middle there is also a small notch. 



Tapajos ; two males'and one female. 



3. Scopcsus pauper, n. sp. Angustulus, subparallelus, 

 rufescens, subtilissime vix perspicue punctulatus, sub- 

 opacus ; vertice emarginato, medio foveolato ; pedibus 

 brevibus, validis. Long. corp. 1 lin. 



Of naiTow form, and almost unicolorous pale-reddish 

 colour. Antenna? short; 3rd joint small, a good deal 

 smaller than the small 2nd joint, joints 3 —6 differing little 

 from one another ; 7 — 10 each very slightly broader than 

 its predecessor, and shoi-ter than liroad ; 11th joint short. 

 Head rather long and narrow, slightly broader than the 



