Brazilian Baring 89 



punctulate; hind femora with rather close and moderate punctures. Length 

 3.0-3.2 mm.; width 1.7-1.8 mm. Brazil (Santarem). Two specimens. 



brevicollis n. sp. 



Eyes separated by less than half of the beak in both sexes; prothorax less abbre- 

 viated and more regularly conical, not so conspicuously less than half as 

 long as the elytra 9 



9 — Body less abbreviated than in the preceding and feebly subrhombic-oval, 

 similarly polished, black; beak notably thick, feebly arcuate, rather com- 

 pressed and strongly sculptured at the sides, finely so and not carinate above, 

 about as long as the head and prothorax; eyes separated by a little less than 

 half the width of the beak, the shining interspace feebly impressed, more 

 deeply posteriad; head distinctly punctured; prothorax but little over two- 

 thirds wider than long, the sides converging and moderately, very evenly 

 arcuate from base to a just perceptible minute constriction at apex; surface 

 with minute and remote punctulation, becoming a little more evident laterad 

 though not conspicuous; basal lobe less narrowly rounded at tip than in 

 the preceding; scutellum nearly similar; elytra more distinctly longer than 

 wide, similarly about a sixth wider than the prothorax, parabolic, the rounded 

 humeri slightly prominent; grooves very coarse, deep, abrupt and nearly 

 smooth, the intervals smooth; under surface and femora punctured as usual, 

 glabrous. Length 3.2-3.3 mm.; width 1.9-2.0 mm. Brazil (Santarem). 

 Two specimens obsidianus n. sp. 



Body smaller, rather more narrowly oval and less subrhombic, similar in color 

 and lustre; beak moderately slender and compressed, feebly arcuate, strongly 

 sculptured, longer than the head and prothorax and feebly dilated apically 

 (9), or slightly shorter and rapidly very sharply dilated apically (cf); 

 prothorax three-fifths wider than long, conical, with feebly and subevenly 

 arcuate sides; basal lobe rather abrupt but evenly rounded; surface finely, 

 sparsely punctulate, gradually more strongly toward the sides, very obtusely 

 ogival, barely as wide as long and flat; elytra very distinctly longer than 

 wide, a little more than twice as long as the prothorax and only slightly 

 wider, parabolic, but with relatively feebly arcuate sides and more rapidly 

 obtuse apex, the humeri feebly prominent, rounded; grooves coarse, very 

 deep, abrupt and nearly smooth; intervals flat, with the minute sparse 

 punctulation barely observable. Length 2.65-2.9 mm.; width 1.6-1.7 mm. 

 Brazil (Santarem). Five specimens rivularis n. sp. 



Body still smaller and narrower, similar in color and lustre; beak evidently 

 longer than the head and prothorax, feebly dilated distally in specimens at 

 hand, which are probably female, feebly arcuate, strongly and closely sculp- 

 tured throughout above and at the sides; eyes separated by less than half 

 the width of the beak as in the preceding, but the interspace is flat, unim- 

 pressed and uniformly punctate and not very sparsely punctate, more 

 polished and posteriorly impressed, as it is in rivularis; head distinctly and 

 rather closely punctate; prothorax conical, with feebly, evenly arcuate sides 

 from base to apex, three-fifths, more or less, wider than long; basal lobe 

 similar; surface minutely, sparsely punctulate, more strongly and less 

 sparsely gradually toward the sides; scutellum smaller, more rounded; 

 elytra distinctly longer than wide, much more obviously wider than the 

 prothorax; humeri just visibly more prominent; grooves a trifle less coarse, 

 very deep and abrupt; intervals flat, the minute punctulation more evident. 

 Length 2.6-2.65 mm.; width 1. 35-1. 45 mm. Brazil (Chapada). Novem- 

 ber. Three specimens puncticeps n. sp. 



10 — Prothorax large, only very slightly narrower than the elytra. Body oval, 

 with only small and feeble humeral swellings, deep black and shining; beak 

 a little longer than the head and prothorax, feebly arcuate, densely sculptured, 



