372 Memoirs on the Coleoptera 



rounding in apical third to the truncate apex, which is fully half as wide as 

 the base; surface finely, closely punctate, without trace of interruption in 

 sculpture or vestiture along the median line; basal lobe abrupt but very 

 short and broadly rounded; elytra two-thirds longer than wide, very slightly 

 wider than the prothorax and three-fourths longer, the sides feebly oblique 

 and straight, evenly rounding in about apical third, without reentrant 

 sutural angle; grooves moderate, slightly exarate at apex, only very finely 

 punctate, a fourth as wide as the flat and subalutaceous intervals, which are 

 minutely, confusedly punctulate; pygidium slightly wider than long, some- 

 what convex, evenly rounded, slightly squamulose at base; abdomen without 

 sexual mark, the segments differing but slightly in length among themselves. 

 Length 4.25 mm.; width 1.4 mm. Brazil (Rio de Janeiro). One specimen. 



bipartitus n. sp. 



Pronotum glabrous, the sides and part of the base abruptly clothed densely 

 with pale scales 2 



2 — Body smaller, elongate-oval, convex, rather shining, deep black, the legs pale 

 rufous, the beak rufous (o 71 ) or black, picescent at apex ( 9 ); beak (c?) very 

 feebly arcuate, compressed, alutaceous and finely punctate, as long as the 

 head and prothorax, having beneath a few erect hairs recalling the dense 

 fringe of P seudomadarus , or ( 9 ) similar in length and barely less thick, the 

 flattened alutaceous sides less extended from the base, the distal parts 

 smoother, the arcuation more even and slightly greater; antennae medial 

 (9), or at three-fifths (cf), the general structure and broad flattened male 

 club as described above; prothorax very slightly longer (cf) or shorter ( 9 ) 

 than wide, the feebly converging sides straight, gently rounding and oblique 

 in nearly apical third; punctures very moderate but deep and separated by 

 about their diameters; dense sulphur-yellow squamules confined to lateral 

 fourth — a little more basally— and to a small ante-scutellar spot, also to the 

 rather large free triangular scutellum; elytra wholly glabrous, two-thirds 

 longer than wide, very slightly wider than the prothorax and scarcely twice 

 as long, the feebly oblique sides nearly straight, rather obtusely rounded 

 behind; grooves deep and distinctly punctate, exarate at apex; intervals 

 with very minute confused and close-set punctulation; pygidium densely 

 punctate, as wide as long (9), wider than long and more oblique (o 71 ); 

 entire under surface densely clothed with pale yellowish scales; abdomen 

 without sexual mark in the male, the segments of equal length. Length 3.5- 

 3.75 mm.; width 1. 2-1. 35 mm. Brazil (Chapada). October to December. 

 Three specimens. [Baridius collaris Boh.] collaris Boh. 



Body nearly similar but more parallel and cylindric, distinctly shining, deep 

 black, the legs obscurely rufescent, the beak black; dense yellow squamules 

 confined to lateral eighth of the pronotum, and thence in broader fascia 

 along the base, abruptly interrupted in median fourth, the scutellum trans- 

 versely oval, shining and glabrous; under surface with generally separated, 

 elongate, yellowish scales, denser on the abdomen and met-episterna; beak 

 ( 9 ) rather thick, feebly tapering, nearly as in the preceding but less flattened 

 at the sides, and a little shorter, barely as long as the prothorax, the latter 

 not quite as long as wide, the sides nearly parallel, straight, more rapidly 

 rounded and oblique in apical fourth; punctures moderate, deep, much 

 sparser and separated by twice their diameters and with narrow and partial 

 smooth median line, wholly wanting in collaris; elytra three-fifths longer 

 than wide, about equal in width to the prothorax and four-fifths longer, the 

 sides parallel, nearly straight, rapidly obtusely rounded in about apical third; 

 grooves moderate, punctate, coarse at apex; intervals with the minute 

 punctulation much sparser than in the preceding. Length 3.75 mm.; width 

 1.25 mm. Brazil (Chapada). May. One specimen, on flowers. 



basalis Solair 



