452 Memoirs on the Coleoptera 



Form moderately elongate, evenly oval, strongly convex, shining and black; 

 beak ( 9 ) peculiar, very slender and smooth, feebly arcuate and rather 

 longer than the head and prothorax, with a deep groove along the sides 

 from the antennae to apical fifth, the basal part rapidly much swollen, com- 

 pressed and strongly, closely punctate; antennae near basal fourth, the 

 scape very short, not as long as the club, the first funicular joint as long as 

 the next three; prothorax between a fourth and third wider than long, the 

 sides feebly converging and nearly straight, gradually rounding and oblique 

 in apical two-fifths; punctures very coarse and finely separated laterally, 

 not so coarse and separated by more than their own diameters medially, 

 without trace of smooth line; basal lobe narrowly subtruncate, the scutellum 

 unusually minute, rounded; elytra evenly oval, a fourth longer than wide, 

 slightly wider than the prothorax and twice as long; grooves half as wide as 

 the intervals, coarser and crenulately punctate basally, the single interstitial 

 series composed of fine but evident punctures; pygidium densely punctate, 

 raised along the median line; abdomen strongly but rather sparsely punctate. 

 Length 2.65 mm.; width 1.25 mm. Brazil (Chapada — forest). October. 

 One specimen unicus n. sp. 



5 — Body evenly oval, strongly convex, deep black and shining throughout; beak 

 ( 9 ) very slender and smooth, scarcely arcuate and a little longer than the 

 prothorax, moderately swollen, compressed, closely punctate and dorsally 

 arcuate at base; antennae at basal third, the scape short; prothorax a fourth 

 wider than long, the sides slightly converging and nearly straight, rapidly 

 rounding and* oblique in apical third; basal lobe narrowly rounded at tip; 

 punctures coarse, dense, distinctly separated and in part finer medially, with 

 a feebly marked partial median smoother line; scutellum small, ogival, 

 slightly impressed and punctate; elytra oval, not very obtuse at tip, two- 

 fifths longer than wide, only just visibly wider than the prothorax and about 

 twice as long; grooves scarcely half as wide as the finely, uniserially punctu- 

 late intervals, but gradually coarser and closely, crenately punctulate basally; 

 pygidium evenly convex; abdomen sparsely punctate; tarsal claws divergent. 

 Length 2.8 mm.; width 1.15 mm. Brazil (Santarem). One specimen. 



puncticollis n. sp. 



Body still more narrowly oval, convex, black and polished, the legs somewhat 

 piceous; beak ( 9 ) short and not very slender, about as long as the prothorax, 

 rather shining, almost straight, feebly bent but not swollen at base; antennae 

 very short, at two-fifths, the scape slightly longer than the club, which is 

 very moderate, oval, with its basal segment nearly half the mass and sub- 

 glabrous, though not shining; prothorax almost as long as wide, the sides 

 converging and straight, abruptly rounded and oblique in scarcely more 

 than apical fourth; basal lobe somewhat prominent but obtusely rounded; 

 punctures very coarse and subcontiguous laterally, separated by half their 

 widths medially and anteriorly less coarse, and with a short smooth line be- 

 hind the middle; scutellum small, ogival; elytra evenly, more obtusely oval, 

 between a fourth and third longer than wide, slightly wider than the pro- 

 thorax and three-fourths longer; grooves half as wide as the intervals, less 

 internally as usual, coarser and subexarate distally, much coarser and more 

 punctate gradually toward base, the interstitial punctures infinitesimal and 

 distant in single lines; pygidium strongly convex; abdomen finely, sparsely 

 punctate, rather coarsely toward the sides. Length 2.6 mm.; width 1.0 mm. 

 Brazil (Chapada — forest). November. One specimen trivialis n. sp. 



6 — Prosternal lobe deeply canalate and closely, strongly punctate; beak very 

 slender. Body evenly oval, convex, shining, black throughout; beak (9) 

 very slender, smooth, moderately but evenly arcuate and about as long as 

 the head and prothorax, gradually moderately thickened, strongly punctate 

 and dorsally somewhat arcuate basally; antennae at basal third, piceous, 



