76 Memoirs on the Coleoptera 



flanks not extending quite to the obtuse lateral pronotal edge; basal lobe 

 small, smooth, more shallowly sinuate at apex; scutellum very small, sub- 

 quadrate, nearly flat; elytra more broadly and obusely rounded behind, 

 parabolic, almost a fourth wider than the prothorax, only a little longer than 

 wide, the humeri not prominent; striae very fine, obsolete laterally, the two 

 marginal moderate, the inner only visible toward apex; outer basal angle of 

 the hind tibiae acute but not very prominent. Length 1.8 mm.; width 1.15 

 mm. Brazil (Chapada). November. One specimen. .. . breviusculus n. sp. 



8 — Color dark; basal thoracic lobe rounded at tip; elytral striae moderate 9 



Color testaceous; basal lobe truncate at tip; elytral striae broad but very shallow 

 and catenulate 10 



9 — Body more narrowly oval, especially in the female, polished, black, the pro- 

 thorax obscure rufous; beak differing in the sexes; notably slender and 

 cylindric, evenly and somewhat strongly arcuate, almost as long as the 

 prothorax and rather strongly sculptured ( 9 ) ; or a little shorter, notably 

 stouter and even more sculptured (c?); prothorax slightly wider than long 

 (o 71 ), about as long as wide ( 9 ), the sides moderately converging and feebly 

 arcuate, a little more so anteriad; apex only feebly constricted, nearly two- 

 fifths as wide as the base ; punctures of the inferior flanks strong but separated, 

 entering the pronotum for a slight distance but becoming very fine and still 

 sparser; basal margin with an irregular series of distinct close punctures, the 

 lobe moderate, very evenly but narrowly rounded at tip; scutellum notably 

 minute, subquadrate and roughly, densely sculptured; elytra slightly elon- 

 gate, between a fifth and sixth wider than the prothorax, with but feebly 

 prominent humeri, the outline parabolic, somewhat narrower in the female; 

 striae rather deep but becoming feeble and more punctulate laterally, the outer 

 two moderately coarse, very approximate poste"riad; under surface strongly 

 and closely punctured throughout; outer hind tibial tooth acute and tri- 

 angular. Length 2.0-2.15 mm.; width 1.2 mm. Brazil (Chapada). March. 

 A single pair flaccidus n. sp. 



Body stouter and more rhombic; coloration above as in the preceding, the pro- 

 notum even more obscure, the entire under surface obscure rufous, the legs 

 black; beak rather slender, arcuate, as long as the prothorax, strongly 

 sculptured; prothorax larger, a fifth wider than long, the sides rather more 

 convergent, feebly arcuate, more so anteriad, the apex narrower, less than 

 two-fifths as wide as the base; coarse punctures of the inferior flanks in- 

 vading the pronotum more narrowly, but with the punctures coarser than 

 in flaccidus; basal marginal punctures nearly similar, the lobe somewhat 

 more obtusely rounded and with the lateral impressions — -wanting in flaccidus 

 — rather evident; scutellum less minute, quadrate, smooth and feebly 

 concave; elytra nearly similar in proportions but with the arcuate sides 

 more rapidly converging to the distinctly narrower apex; humeri even less 

 prominent; striae almost similar and evidently punctulate; densely punctate 

 under surface and the tibiae nearly similar, the finer punctures of the met- 

 episterna in a single series and not broadly confused as in flaccidus. 

 Length 2.2 mm.; width 1.4 mm. Brazil (Chapada). March. One female 

 example congruens n. sp. 



Body stout and slightly more abbreviated, deep black throughout, the pronotum 

 obscure rufous; beak rather slender, evenly and somewhat strongly arcuate, 

 strongly sculptured and as long as the prothorax, the latter nearly as in 

 congruens in form, much larger than in flaccidus, but punctured throughout 

 in nearly the same way toward the sides and along the base, a fifth wider 

 than long; basal lobe a little broader than in flaccidus and evenly rounded, 

 without lateral impressions; scutellum about as minute as in the latter, 

 with a few punctures, much smaller and less smooth than in congruens; 



