Brazilian Barix.e 187 



and decidedly shorter than usual in both sexes, only a little longer than the 

 head and prothorax and but moderately arcuate, the antennae somewhat 

 long, piceous; prothorax only a fourth (<?) to nearly a third (9) wider 

 than long, the converging sides moderately and subevenly arcuate from base 

 to tubulation, which is distinctly more than half as wide as the base; rugae 

 nearly as in the other species, but with a distinctly differentiated convex 

 median line; scutellum rather well developed, longer than wide and longi- 

 tudinally impressed; elytra one-half longer than wide (o 71 ), a little less ( 9 ), 

 slightly wider than the prothorax and more than twice as long, the oblique 

 sides only very feebly arcuate to the narrowly rounded apex; grooves deep 

 and abrupt, punctured along the bottom and somewhat over half as wide as 

 the intervals, the punctures of which, in single series, are distinct but well 

 separated; abdomen in the male having a small medio-basal concavity, 

 which is but little smoother. Length 2.8-2.9 mm.; width 1. 25-1. 3 mm. 

 Brazil (Chapada). May and June. Two specimens attenuatus n. sp. 



Body stouter and with notably larger prothorax and less elongate and less atten- 

 uated elytra, black, somewhat shining; beak ( 9) rather strongly, subevenly 

 arcuate, only just visibly tapering, longer than in the preceding and much 

 longer than the head and prothorax, the latter fully two-fifths wider than 

 long, with the converging sides subevenly and rather strongly arcuate from 

 base to tubulation, which is not or but little more than half as wide as the 

 base; rugae and median line somewhat as in the preceding; scutellum almost 

 similar; elytra not quite so elongate and with the oblique sides just visibly 

 more arcuate, the apex very slightly more obtuse, the deep grooves but 

 little more than half as wide as the intervals, the punctures of which are 

 stronger and less widely separated in the series; vestiture of the under surface 

 as usual. Length 3.2 mm.; width 1.6 mm. Brazil (Chapada). On flowers 

 in clearings. May. Two females avidus n. sp. 



Body shorter than in either of the two preceding and more shining, deep black 

 and rhomboid-oval, the beak ( 9 ) strongly arcuate, gradually less so, tapering 

 and thin to an unusual degree distally, almost half as long as the body, the 

 antennae slender, blackish and just beyond the middle, or (c?) slightly 

 shorter and thicker and more evenly, though subequally arcuate, the anten- 

 nae subsimilar; prothorax two-fifths wider than long, the strongly converging 

 sides nearly.straight, rounding anteriorly to the pronounced tubulation, which 

 is a little more than half as wide as the base; rugae somewhat coarse and 

 shining, the median line not evidently differentiated, the scutellum rather 

 small, emarginate but scarcely at all impressed; elytra fully a third longer 

 than wide, distinctly wider than the prothorax and more than twice as long, 

 the oblique sides somewhat more arcuate than in the preceding, the apex 

 rather narrowly rounded, especially in the male; deep grooves fully half as 

 wide as the intervals, the punctures of which are strong but well separated 

 in the series; abdomen (0") with a strong subtransverse subbasal concavity, 

 the anterior coxae separated by fully a third of their width. Length 2.5-2.8 

 mm.; width 1.1-1.4 mm. Brazil (Para), — Baker. Six specimens. 



corvulus n. sp. 



This is evidently one of the characteristic neotropical genera of 

 small Centrinini, and it invariably occurs, in all probability, in 

 flowers near forests. The two primary divisions of the genus as 

 indicated in the table are of a subgeneric nature. 



The males in the second section of this genus have a small acute 

 tooth near the middle of the inner side of the anterior tibiae, but I 



