316 Mr. D. iSluiri/ij Contrihiitlunn to the 



small, ill-defined space behind the middle, smooth and 

 shinino-. I'lioi-ax ^ lin. in length, ajid hardly so broad, 

 not in the least curved at the sides, but a little narrowed 

 behind ; the whole surface covered with dense coarse punc- 

 tures, a very narrow, lono;itudinal, smooth line along- the 

 middle ; the colour is similar to that of" the head, and it 

 bears a scanty, pale i)ubescence. Scutellum short and 

 broad, roimded at the extremity, punctured. Elytra about 

 as long as the thorax, dark blue in colour, the punctua- 

 tion rather coarse and moderately close, finer and more 

 sj)aring towards the extremity. Hind body shining black, 

 Avith tlie 8th segment and the hind margin of the 7th red ; 

 the connecting membrane of segments 2 — 5 white, but 

 that between the 4th and otli segments bi'oadly infuscate 

 in the middle ; the segments are rather coarsely punctured. 

 The legs are short and stout ; the front and middle tarsi 

 reddish, the front femora and tibi.e pitchy ; the trochanters 

 reddish, elsewhere nearly black. 



Tapajos ; a single specimen, apparently a female. 



16. Tcpnodevxa serpens, n. sp. Nigra, capite, thorace, 

 elytrisque plumbeis, fere o])acis, dense fortiterque punc- 

 tatis ; antennarum basi, paljjis, abdominisque apice rufis, 

 pedibus anterioribus piceis. Long. corp. 4.^ lin. 



Mas : abdomine segmento 7° ventiali apice medio exci- 

 sione semicirculari magna, basi rigide nigro-setoso. 



Antenniv moderately long, distinctly thickened towards 

 the extremity, l)lackish ; 1st and .'^rd joints short, of about 

 equal lengths, 4 — 10 each a little bi'oader than its prede- 

 cessor, lOth about aslong as broad. Pal])i yellow; mandibles 

 red. Head with the surfiice convex, faintly metallic, very 

 densely punctured, bearing a ])ale, upright ])ubescence ; a 

 very narrow space above the middle, smooth and shining. 

 Thorax rather longer than broad, almost straight at the 

 sides and slightly narrowed ])ehind, transversely convex; 

 the whole surfiice very densely and coarsely punctured, 

 bearing a pale, upright pubescence. Scutellum small, 

 coarsely punctured. Elytra slightly longer than the 

 thorax, closely and coarsely ])unctured, a little shining, 

 Avith a ]iale, uj)right pubescence. Hind body black, red- 

 dish at the extremity, sparingly clothed with a pale pubes- 

 cence, most distinct on the 7th segment; the foiu- basal 

 segments coarsely and closely punctui-ed, the two following 

 ones much more indistinctly. Front legs pitchy, with the 



