370 j\Ir. L). Sharp's Contrihutions tu the 



flat, and scarcely depressed Lelow the margui of the eyes ; 

 densely, evenly and rather coarsely punctured ; on the 

 underside the gena^ are very broad and very densely and 

 coarsely punctured. Thorax greatly narrower than the 

 elytra, nearly twice as long as broad, cylindric, the sides 

 not at all rounded, deeph', very densely and rather coarsely 

 ])unctui'cd, the ])unetuation rather coarser at the basal 

 margin than at the Iront. Elytra narrow, but with the 

 shoulders well marked and prominent, densely, deeply and 

 coarsely punctured ; behind the scutellum depressed, and 

 the punctuation there rather finer and denser; that towards 

 the hind margin rather coarser and more sparing, so that 

 that part is more shining than the base. Hind body 

 elongate and narroAv; the segments closely and rather 

 coarsely ])unctured, the 6th smooth towards the hind mar- 

 gin, the 7tli sjiaringly and obsoletely ])uiictured. Legs 

 pale yellow, the tarsi moderately slender. 



The male has a very deep excision on the ventral plate 

 of the 7th segment ; the 6th is broadly impressed along 

 the middle, and there extremely finely and densely pimc- 

 tured, and bearing a fine, pale pubescence, and its hind 

 margin is a little cut away in the middle ; the 5th seg- 

 ment is more finely punctured along the middle than 

 elsewhere. 



I'ara and Tapajos; several specimens. 



15. Ste}ius Puree, u. sp. (Sect. II. B, Er.) Elongalus, 

 angustus, niger, leviter metallescens, antennis, palpis, pedi- 

 busque pallide flavis ; thorace dense fortiterque punctato ; 

 elytris thoracis longitudino, fortiter punctatis, nitidulis ; 

 abdomine ibrtiter, minus crcbre punctato. Long. corp. 

 21 lin. 



Head quite as broad as the elytra, the front closely and 

 coarsely punctured, but still shining, a little depressed in 

 the middle. Thorax much longer than broad, a good deal 

 narrower than the elvtra: the sides only sliglitlv narrowed 

 t(jw:ir(ls the front, but distinctly contracted behind the 

 middle ; densely covered with a coarse, almost rugose 

 punctuation, 1)ut with the interstices distinctly shining. 

 ]']lytra al)()ut as long as the thorax, Avith the shoulders not 

 very prominent, covered with a coarse ])unctuation, which 

 becomes more sparing towards the hind margin, where, 

 however, it is still ([uite distinct, the interstices quite 

 shining. Hind body slender and cylindric, the three or 



