36 Memoirs on the Coleoptera 



remote punctules; abdominal base concave and strongly, densely punctate 

 medially, the punctured area abruptly smooth at base. Length 6.4 mm.; 

 width 4.4 mm. Brazil (Rio de Janeiro). November. One specimen. 



posticus n. sp. 



Body still a little smaller, more regularly oval; coloration as in auritus, but with 

 the general rufous tint more obscure; . surface very smooth and polished; 

 beak shorter than in posticus, two-thirds as long as the prothorax, almost 

 similar in sculpture; prothorax shorter, nearly a third wider than long, the 

 sides evenly convergent and arcuate from base to the very much less abrupt, 

 feebler and narrower subtubulate apex; basal lobe narrower and truncate at 

 tip, smooth; disk impressed at each side of the lobe in a way not obvious in 

 posticus; surface more evenly convex, not so rapidly or deeply declivous at 

 the sides; scutellum smaller, flatter, subquadrate; elytra broadly oval, with 

 strongly arcuate sides and apex, scarcely as long as wide, a fourth wider than 

 the prothorax, the humeri not laterally prominent; striae obsolete, the minute 

 punctulation remote, the second with an elongate fovea at base, the sutural 

 a simple series ol small punctures, becoming a coarse, groove basally; con- 

 cave base of the abdomen sparsely punctate; tibia? angulate externally near 

 the base as in the preceding. Length 5.2 mm.; width 3.7 mm. Brazil 

 (a single example, without more definite record of locality, from a European 

 dealer) brevirostris n. sp. 



Body shorter and broader, more rhombiform than in brevirostris, very smooth, 

 the entire upper surface uniform brownish-red, the thoracic apex piceous; 

 under surface medially, legs and beak black; beak not very thick, evenly 

 and distinctly arcuate, three-fourths as long as the prothorax, evenly cylin- 

 dric, finely, feebly punctulate at the sides, gradually smooth distally, the 

 head finely but distinctly punctate; prothorax as in brevirostris, except that 

 the basal lobe is broader at tip and transversely impressed, and that the 

 basal impression of the disk at each side of the lobe is much feebler and less 

 foveiform; scutellum subquadrate, flat, a little wider than long and nearly 

 smooth; elytra triangular, with more narrowly rounded apex and evenly but 

 less distinctly arcuate sides and more narrowly rounded and distinctly 

 prominent humeral protuberances at the sides, not quite as long as wide and 

 a fourth wider than the prothorax; striae fine but distinct, being simple 

 series of small punctures externally but slightly impressed internally, the 

 sutural deep and grooved throughout the length; abdomen at base strongly 

 and rather closely punctate, with an abruptly deep and less punctate median 

 part. Length 5.5 mm.; width 4.2 mm. Brazil (a single example without 

 more definite indication of locality, received from Desbrochers des Loges). 



testaceus n. sp. 



6 — Lateral prominences of the elytra at the humeri pronounced and rather con- 

 spicuous, though rounded, as usual in the genus 7 



Lateral prominences very broadly rounded and entirely inconspicuous; beak 

 distinctly and evenly arcuate 10 



7 — Elytral striae or series distinct throughout, the sutural stria gradually becoming 

 conspicuously deep and coarse toward base 8 



Elytral striae and series fine and very feeble, the sutural stria not notably coarse 

 basally 9 



8 — Form rather rhombic-oval, larger in size, rufo-piceous above, the elytra 

 shaded black broadly toward suture and apex, but very indefinitely; head, 

 beak, under surface and legs deep black; pronotum densely, the elytra feebly, 

 alutaceous in lustre; beak not very thick and not over two-thirds as long as 

 the prothorax, feebly and evenly arcuate, smooth, shining and virtually 

 punctureless, the punctures very minute and sparse; antennae moderate, 

 the club not quite as long as the funicle; prothorax a third wider than long, 



