370 Mr. T). SIiai[)\s Contrihutlons to the 



flat, and scarcely de])ressed below the margin of tlie eyes ; 

 densely, evenly and rather coarsely punctured ; on the 

 underside the gentB 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, deeply, very densely and rather coarsely 

 punctured, the punctuation rather coarser at the basal 

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

 shoulders well marked and prominent, densely, deej)ly and 

 coarsely punctured ; behind the scuteliuni depressed, and 

 the ])unetuatiou 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 narrow; the segments closely and rather 

 coarsely punctured, the 6th smooth towards the hind mar- 

 gin, the 7th sparingly and obsoletely punctured. 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 punc- 

 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. 



Para and Tapajos; several specimens. 



15. Stenns Paj-cE, n. s-p. (Sect. IT. B, Er.) Elongatus, 

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

 busque ])allide flavis ; thorace dense fortiterque punctato ; 

 elytris thoracis longitudine, fortiter punctatis, nitidulis ; 

 abdomine fortiter, minus crebre punctato. Long. corp. 

 21 lin. 



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

 coarsely ])unctured, but still shining, a little depressed in 

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

 narrower than the elytra : the sides only slightly narrowed 

 towards the front, but distinctly contracted l)ehind the 

 middle ; densely covered with a coarse, almost rugose 

 punctuation, but with the interstices distinctly shining. 

 Elytra about as long as the thorax, Avith the shoulders not 

 very prominent, covered with a coarse ]mnctuation, Avhich 

 becomes more sparing towards the hind mai'gin, where, 

 however, it is still quite distinct, the interstices quite 

 shining. Hind body slender and cylindric, the three or 



