222 Memoirs on the Coleoptera 



usually large, the prothorax broadly and not very abruptly tubulate 

 at apex and finely beaded along the basal margin, the scutellum 

 small, flat and but slightly free, and the elytra are abruptly grooved. 

 The male is not certainly identifiable among my three unique types 

 and I .can perceive no abdominal or prosternal sexual characters. 

 The three species known to me are the following: 



Elytral grooves fine, smooth, only about a fifth as wide as the intervals. Body 

 oval, strongly convex, shining, black, the upper surface bristling with long 

 dark sparse erect hairs, almost uniformly distributed, rather confused along 

 the strial intervals, the under surface with short and subdecumbent, even 

 sparse whitish squamules; beak in the probably female type as long as the 

 head and prothorax, thick, arcuate, somewhat compressed and coarsely, 

 closely sculptured in about basal, gradually thinner, smoother and cylindric 

 in distal, half, the antennae rufo-piceous; prothorax somewhat more than a 

 fourth wider than long, the sides evenly and rather strongly arcuate, becoming 

 subparallel basally, the tubulation half as wide as the base, the head but 

 little narrower; punctures rather fine and well separated, somewhat stronger 

 and closer laterally; basal lobe moderate, gradually formed and evenly 

 rounded at apex; scutellum small, flat, subquadrate and sculptured; elytra but 

 little longer than wide, rapidly parabolic, only very slightly wider than the 

 prothorax and one-half longer; humeri small and feebly prominent; intervals 

 wide and flat, finely, loosely and rather confusedly punctulate; abdomen 

 evenly convex and loosely punctulate in the type. Length 3.25 mm.; width 

 1.75 mm. Brazil (Santarem). A single specimen hystrix n. sp. 



Elytral grooves coarser, a third to half as wide as the intervals 2 



2 — Body shorter and more broadly oval, polished, black, the erect pronotal 

 bristles extremely short and sparse, those of the elytra remote in single inter- 

 stitial lines and fine, suberect and dark, with a few whitish basally and 

 apically; they are very small, sparse and whitish beneath; beak rather thick, 

 dull, perfectly straight, feebly and subangularly bent at the extreme base, 

 distinctly longer than the head and prothorax, the antennae piceous; prothorax 

 a fourth wider than long, the sides slightly converging and feebly arcuate, 

 rounding rapidly near the apex to the gradual tubulation, which is only a 

 little wider than the head and much more than half as wide as the base; punc- 

 tures minute and remote coarser but still rather sparse laterad; basal lobe, 

 short, gradual, strongly rounded at tip; scutellum small, flat, smooth and 

 subquadrate; elytra barely visibly longer than wide, rapidly parabolic, only 

 slightly wider than the prothorax and less than one-half longer ; grooves half as 

 wide as the intervals to more, the interstitial punctures small and well sepa- 

 rated in single series; femora coarsely, longitudinally and densely punctato- 

 rugose, much longer than the narrow hind tibiae, which are rapidly bent at 

 base; abdomen convex, moderately and closely punctate. Length 2.8 mm.; 

 width 1.55 mm. Brazil (Santarem). One specimen cephalotes n. sp. 



Body smaller and much narrower, rather shining, black, the prothorax obscure 

 rufous; beak and antennae nearly similar; prothorax similarly somewhat 

 strongly convex as viewed in lateral profile, rather shorter, almost a third 

 wider than long, the sides almost parallel, feebly arcuate, rounding apically 

 to the very broad and gradual tubulation, fully four-sevenths as wide as the 

 base, the head notably large; punctures a little stronger, sparse, becoming 

 more notably coarser and close laterad, the lobe and scutellum almost 

 similar; elytra barely longer than wide, parabolic, the sides less oblique than 

 in the preceding and the apex rather more obtusely rounded, only very 

 little wider than the prothorax and one-half longer, the grooves scarcely so 



