68 Memoirs on the Coleoptera 



7 — Outline subrhombic-oval, not very stout; beak very thick, the upper surface 

 arcuate, the lower nearly straight in profile, but little shorter than the 

 prothorax, strongly compressed, rather finely, sparsely punctate, minutely 

 and remotely so above, the transverse basal impression distinct, though 

 obtuse as usual; front not foveate; antenna? medial, the oval pointed pubes- 

 cent club scarcely as long as the five preceding joints; prothorax with the 

 upper surface moderately and evenly arcuate in profile from base to apex, 

 a fifth wider than long, the sides less evenly arcuate than usual, strongly 

 converging and but slightly arcuate from the base, more rounding and 

 converging anteriad, the apex fully two-fifths as wide as the base; pronotum 

 very smooth; flanks beneath with rather strong sparse punctures, which 

 reach the lateral edge near the base; lobe rather small and feeble, the small 

 sinus deep and conspicuous; scutellum narrow, fiat, feebly impressed along 

 the middle distally; elytra distinctly longer than wide, a fifth or sixth wider 

 than the prothorax, narrowly parabolic, with but moderately arcuate sides, 

 the humeri broadly rounded; discal striae as in the preceding; mes-epimera 

 very coarsely, closely punctate throughout; femora rather narrow, sub- 

 strigosely punctate; tibial tooth rather small but triangular and sharp; first 

 ventral much and evenly swollen, very coarsely and densely, rugosely punc- 

 tate. Length 2.7 mm.; width 1.7 mm. Brazil (Santarem). One example. 



demissus n. sp. 



8 — Posterior tibiae oblique and simply angulate externally at base. Body rather 

 small in size, subrhombic-oval; beak moderately thick, somewhat arcuate, 

 compressed and strongly sculptured, distinctly shorter than the prothorax; 

 antennal club about as long as the preceding six joints, the first funicular 

 joint as long as the next three; front with a large deep excavation as in 

 cavifrcns; prothorax with the upper surface evenly and moderately arcuate 

 in profile, a fifth wider than long, with strongly converging, evenly arcuate 

 sides, the basal lobe short and feeble, with a few marginal punctures and a 

 small distinct sinus; flanks beneath smooth, punctured only basally; scutel- 

 lum small, parallel, longer than wide, smooth and longitudinally impressed; 

 elytra parabolic, a fifth wider than the prothorax and slightly elongate; 

 discal striae scarcely at all traceable, evident basally; mes-epimera very 

 coarsely punctate throughout; legs rather slender, not very densely, sub- 

 strigosely punctate, the flattened tibiae almost fluted; first ventral coarsely 

 punctate and swollen, not impressed. Length 2.4-2.7 mm.; width 1. 7-1 .85 

 mm. Brazil (Chap'ada — forest). March and November. Four specimens. 



foveiceps n. sp. 



Posterior tibiae oblique and arcuate externally at base, the arcuation ending 

 distally in a long, very oblique spiniform tooth, which is almost parallel to 

 the outer tibial edge and separated from the latter by a deep sinus; front 

 with a large deep cavity, as in the preceding. Body rhombic-oval; beak 

 (o 71 ) short, thick, compressed, barely three-fifths as long as the prothorax, 

 the flattened sides closely, the upper surface more finely but closely, sub- 

 strigosely, punctate; antennae nearly as in the preceding, but with the 

 strongly sutured club longer than the preceding six joints, or ( 9 ) much 

 more slender, cylindric, arcuate more distally, two-thirds as long as the 

 prothorax, more sparsely and finely punctured; front in both sexes with a 

 large and very deep cavity; prothorax almost similar, but barely a sixth 

 wider than long; basal lobe larger, impunctate and very evenly rounded, 

 without trace of sinus; scutellum minute, quadrate, very feebly, longitudi- 

 nally impressed; elytra more elongate, a fourth wider than the prothorax, 

 with somewhat prominent humeri, parabolic in outline; discal striae exces- 

 sively fine and feeble, but with the fine distant punctures evident, though 

 extremely feeble; mes-epimera only partially punctured; very coarsely 



