Brazilian Barin.e 4! 



dominal plaque broadly, evenly concave, slightly less densely punctate than 

 in the preceding; subbasal tibial angulation nearly similar. Length 10.3- 

 11.0 mm.; width 7.0-7.2 mm. Brazil (Chapada). November and Decem- 

 ber. Two specimens, exhibiting some difference in the convexity of the 

 scutellum umbonaticollis n. sp. 



Form rhombic; color deep black, the pronotum piceo-rufous; surface smooth; 

 beak two-thirds as long as the prothorax, feebly arcuate, stout, more slender 

 apically, compressed, coarsely, very densely sculptured, the smaller punctures 

 above strong, dense and longitudinally confluent in a manner very different 

 from the two preceding, where these punctures are minute and widely sepa- 

 rated; antennal club gradually pointed, continuous in outline with the funicle 

 and shorter than the latter; prothorax smaller than in either of the preceding, 

 as long as wide, the sides from above more strongly converging, very slightly 

 arcuate, the lateral prominences very obtuse and broadly rounded but still 

 distinct under certain oblique angles of view, the anterior outline strongly 

 arcuate; basal lobe strongly arcuate, somewhat impressed and with sparse 

 moderate punctures, without lateral impressions at the base; scutellum 

 narrower than long, parallel, with sinuate bicuspid apex, smooth and feebly 

 convex; elytra slightly elongate, fully a third wider than the prothorax, 

 triangular, with rounded tip and broadly rounded prominent humeri; stria? 

 and punctures extremely fine or subobsolete, the sutural stria abruptly coarse 

 and deep for some distance near the base; subbasal prominence of the hind 

 tibiae very broad, obtusely rounded; abdominal plaque broadly concave, its 

 dense strong punctures, as well as those of the metasternum, conspicuously 

 setulose. Length 9.6 mm.; width 7.0 mm. Brazil (Chapada). October. 

 One example distinguendus n. sp. 



Form rather broadly rhomboidal, deep black and polished, the pronotum dark 

 rufous and alutaceous; beak concave beneath, two-thirds as long as the 

 prothorax, feebly arcuate and slightly tapering, compressed and strongly, 

 closely sculptured, finely and closely punctate on the upper surface, the 

 canal beyond the antennae very broad, concave and conspicuous; antennal 

 club shorter than the funicle; prothorax but little wider than long, the con- 

 verging sides arcuate, the umbones feeble and obtusely rounded; surface 

 with sparse and extremely minute punctures; basal lobe narrowly sinua to- 

 truncate at apex, rather coarsely punctate, without lateral impressions; 

 scutellum quadrate, feebly convex, minutely punctulate; elytra cuneiform, 

 just visibly longer than wide, between a fourth and third wider than the 

 prothorax, the apex and humeri broadly rounded; fine striae and punctures 

 subobliterated, barely traceable, the sutural stria more distinct toward base; 

 tibial tooth broad and not very acute though sharply defined; abdominal 

 plaque broadly and deeply concave, its moderate and very dense punctures, 

 as well as those of the metasternum, conspicuously setulose. Length 8.8 

 mm.; width 6.35 mm. Brazil (Chapada). November. One specimen. 



cavirostris n. sp. 



16 — Body nearly as in the preceding but smaller in size and distinctly narrower, 

 polished, deep black, the pronotum paler, piceo-rufous; beak (0*) and 

 antennae similar, except that the close punctures of the upper surface are 

 finer and coalescent in shorter grooves; the beak (cf ) is a little shorter, or ( 9 ) 

 longer, more cylindric and less punctured; prothorax very nearly similar 

 in its rapidly converging sides, but not so conspicuously narrower than the 

 elytra, and also slightly wider than long, the sublateral umbones rather more 

 evident; anterior outline by postero-oblique view strongly evenly arcuate; 

 punctures of the apical tubulation fine and sparse; basal lobe narrowly 

 truncate at tip, having numerous large lunate punctures, which are continued 

 along the entire base by smaller confused punctures, the lateral basal im- 



