54 Memoirs on the Coleoptera 



Body larger in size, subrhombic-oval in form 2 



Body notably smaller, rather more definitely rhomboidal 3 



2 — Color black, the pronotum obscure rufous, shining; beak very thick, cylindric, 

 feebly arcuate, nearly four-fifths as long as the prothorax, coarsely, con- 

 fluently punctate, strongly but less densely so above; antennae submedial, 

 the club scarcely longer than the three preceding joints combined, finely, 

 very sparsely punctate, more strongly and less sparsely toward base; pro- 

 thorax a fourth wider than long, the sides strongly arcuate, becoming parallel 

 basally, the apical tubulation nearly three-sevenths as wide as the base; 

 surface evenly convex, smooth; basal lobe obtusely rounded and moderately 

 punctate, the edge with some short pale setae; lateral impressions small but 

 evident; scutellum smooth and parallel, truncate and strongly transverse; 

 elytra barely longer than wide, nearly a fourth wider than the prothorax, 

 oval, with moderately prominent rounded humeri; striae very fine and feeble, 

 with distant fine punctures, the sutural entirely sulciform, two and three less 

 coarsely so and only toward apex, the ninth and tenth deeply and coarsely 

 sulcate; abdomen feebly, longitudinally impressed and sparsely punctate 

 and setulose medially at base; flanks of the under surface minutely, sparsely 

 punctate. Length 7.2-7.3 mm.; width 4.75-4.8 mm. Brazil (Chapada — 



campo). December. Two specimens plenicollis n. sp. 



Color and lustre similar, the form more abbreviated and more oblong-oval; beak 

 perfectly cylindric, feebly arcuate, very coarsely, rather irregularly punctured, 

 less coarsely and more sparsely so above, as long as the prothorax ( 9 ), 

 or scarcely three-fourths as long (cf ), though otherwise similar, the antennal 

 club barely as long as the three preceding joints; prothorax shorter, fully a 

 third wider than long, otherwise nearly similar, the obtuse punctate basal 

 lobe impressed medially toward apex; lateral impressions very diffuse and 

 feeble; scutellum similar but less abbreviated, smooth; elytra barely as long 

 as wide, a fifth wider than the prothorax, broadly and obtusely oval, with a 

 feeble subapical convexity as in the preceding, the humeri moderately promi- 

 nent; striation nearly as in the preceding; abdominal base still more feebly 

 impressed, having small sparse punctures and short glistening setae. Length 

 6.3-6.9 mm.; width 4.35-5.0 mm. Brazil (Chapada — campo). October 



and November. Seven specimens brevior n. sp. 



3 — Body obtusely rhombic-oval, feebly alutaceous, black, the elytra obscure, the 

 pronotum bright, rufous, the latter feebly alutaceous; beak less thick, dis- 

 tinctly arcuate, cylindric and about as long as the prothorax, coarsely punc- 

 tured, more closely at the sides; prothorax between a third and fourth wider 

 than long, formed as in the two preceding; basal lobe obtusely rounded, 

 with rather numerous punctures, fine apical setae and feeble apical impression, 

 the lateral impressions at the basal edge feeble; scutellum smooth, trans- 

 verse; elytra scarcely as long as wide, obtusely oval, with the rounded hu- 

 meral projections rather prominent, the edge behind them feebly sinuate, 

 between a fourth and fifth wider than the prothorax; striae fine but distinct, 

 rather distantly and finely but very distinctly punctate, the sutural, the 

 second apically and basally and the ninth and tenth grooved, the two latter 

 more coarsely, the tenth not attaining the base; punctures of the feebly 

 impressed base of the abdomen rather strong but sparse, the setae distinct. 

 Length 5.3 mm.; width 3.8 mm. Brazil (Chapada). November. One 



specimen rufopicea n. sp. 



Body nearly similar but somewhat more elongate; elytra deep black and polished, 

 the pronotum bright rufous; beak almost similar but a little shorter and 

 thicker, the sex of the type apparently female as in the preceding; prothorax 

 slightly less abbreviated, the tubulation and head broader than inrujopicea, 

 barely a fourth wider than long, the rounded sides less rapidly becoming 



