Brazilian Baring 51 



punctulation not more noticeable at the sides; sinuate basal lobe with a few 

 coarse punctures; scutellum quadrate, a little wider than long, minutely and 

 sparsely punctulate; elytra very slightly elongate, parabolic, with very feebly 

 arcuate sides and rapidly rounding apex, the humeri as in the preceding, a 

 fourth wider than the prothorax; striation and minute punctures nearly as 

 in the preceding; tibial tooth rather high and acute. Length 3.8 mm.; 

 width 2.8 mm. Brazil (Chapada — campo). November. One specimen. 



frugalis n. sp. 



37 — Form rhombic, very convex and polished throughout; beak (o 71 ) three-fifths 

 as long as the prothorax, rather thick, feebly arcuate, compressed, strongly, 

 densely punctate, a little less so above, the grooves beyond the antenna? 

 wide, deep and conspicuous, or ( $ ) three-fourths as long as the prothorax, 

 more cylindric, almost as strongly sculptured and with the grooves nearly 

 similar, but not extending quite so close to the tip; antennal club thick, oval, 

 pointed, not quite as long as the funicle; prothorax a fifth or sixth wider than 

 long, the converging sides subevenly arcuate; basal lobe sparsely punctate, 

 rather widely and deeply sinuate, feebly and angularly impressed, the lateral 

 impressions distinct; scutellum large, as wide as long, rather rounded, arcuate 

 at base, coarsely punctate and rugose and nearly flat ( 9 ), or smoother, with 

 the median part abruptly and strongly elevated (c? 1 ); elytra barely as long 

 as wide, fully a fifth wider than the prothorax, ogival, with narrowly obtuse 

 apex and rather prominent rounded humeri; grooves not very coarse but 

 deep, abrupt and impunctate, becoming fine, feeble and remotely punctulate 

 strise on the flanks, the ninth stria not so coarsely exarate as in the preceding 

 group and the tenth very moderate, impunctate; abdominal plaque broadly 

 and acutely impressed, sparsely but strongly punctate; hind tibial tooth 

 sharp. Length 4.5-4.8 mm.; width 3.3-3.5 mm. Brazil (Chapada). 

 March and November. Three specimens nigritus n. sp. 



Form and general characters very nearly similar but somewhat narrower, the beak 

 (9) nearly similar, the antennal club still thicker, more obtuse at apex; 

 prothorax almost similar, the basal lobe unimpressed; scutellum large, sub- 

 quadrate, slightly wider than long, rounded at base, its surface nearly flat, 

 even and very finely, rather closely punctulate; elytra almost similar; basal 

 abdominal plaque also differing greatly, strongly, rather closely punctate, 

 deeply, transversely impressed and smooth at base, the rest of its surface 

 transversely tumid, with a small smooth semicircular impression in the middle 

 of its posterior slope; hind tibial tooth high, with finely aciculate apex. 

 Length 4.3 mm.; width 3.15 mm. Brazil (Chapada). A single female, 

 with no further attached data basalis n. sp. 



38 — Body obtusely and broadly subrhombic-oval, deep black, polished through- 

 out, the pronotum rufous; beak rather stout and thick, feebly tapering, 

 slightly arcuate, compressed at the sides and not quite two-thirds as long as 

 the prothorax; sides strongly but loosely, evenly punctate basally, finely and 

 densely so anteriorly and on the upper surface, the anterior lateral channels 

 long, broad, moderately deep; antennal club very distinctly shorter than the 

 funicle, which is piceous as usual; prothorax a fourth wider than long, the 

 sides slightly arcuate and parallel basally, gradually more rounding and very 

 converging anteriorly; surface polished, the infinitesimal punctules very 

 sparse and indistinct, the basal lobe with transverse impression, truncate, 

 closely punctate, the lateral impressions wholly obsolete; scutellum parallel, 

 wider than long, deeply and broadly sinuate at apex and finely, closely punc- 

 tate; elytra barely longer than wide and scarcely a fifth wider than the pro- 

 thorax, ogival, with narrowly rounded apex and large prominent rounded 

 humeri; surface of each very tumid externally near apex, giving an obtuse 

 posterior aspect on vertical view; broad grooves finely punctate along the 



