342 Memoirs on the Coleoptera 



the elytra and but feebly, evenly tapering (cf ), or nearly similar in length 

 but slightly more slender, and more rapidly thickened behind the antennae 

 (9); antennae glabrous, shining and piceous; prothorax a fifth wider than 

 long, the sides distinctly converging from base to apex and, at the middle, 

 broadly arcuate, the tubulation very gradually formed, half as wide as the 

 base ( 9 ) or less (o 71 ), and more punctate than the rest of the surface, which 

 has only sparse and infinitesimal punctulation, becoming more distinct at 

 the sides; elytra one-half longer than wide, a fifth wider than the prothorax 

 and three-fourths longer, ogival, the apex a little more obtuse in the male; 

 humeri obtusely and feebly prominent; punctures of the striae and grooves 

 strong and distinct, moderately separated; intervals smooth and flat, very 

 finely, serially punctate toward the sides only; under surface strongly, the 

 abdomen more feebly and sparsely, punctate, the latter feebly impressed at 

 base in the male, where the prosternal spines, as long as the femoral thickness, 

 are at the apical angles of a parallel plaque and separated by an even sinus, 

 the anterior tibiae fimbriate internally in apical two-fifths, the anterior tarsi 

 not noticeably modified. Length 5.7-5.8 mm.; width 2.7-2.75 mm. Brazil 

 (Chapada— campo). November. Two specimens striatula n. sp. 



Body nearly similar in outline, coloration and sculpture but larger in size; long 

 and smooth cylindrical beak (c?) still longer, being fully a fourth longer 

 than the elytra and in like manner rather coarsely but loosely punctured 

 behind the antennae, which are relatively still more basal, being distinctly 

 behind basal third, or ( 9 ) nearly similar but a little shorter and more slender, 

 though evidently longer than the elytra, the antennae blackish and long, 

 with similar small and narrowly oval club, and they are similarly inserted in 

 the sexes; prothorax almost similar, but more nearly as long as wide, the 

 punctures at the sides more minute and still sparser, those on the tubulation 

 strong and dense; basal lobe, scutellum and elytra throughout almost 

 similar, the fine squamules of the flattened apical slope rather more evident; 

 under surface in the male almost similar, excepting the presternum, which 

 is distinctly different, there being a large and strongly punctate, flat and 

 obtrapezoidal plaque, subinclined upward and much wider than long, having 

 as its base the transverse suture between the coxae, its apex broadly, feebly 

 sinuate, with a small deep medial impression and with its outer apical angles 

 briefly prolonged and conical, the depressed surface beyond the plaque 

 nearly similar; anterior tarsi (o 71 ) with a conspicuous inner fringe of fine 

 hairs, not observable in striatula, the fringe of the anterior tibiae extending 

 through apical half. Length 6.25-6.4 mm.; width 3.0-3.1 mm. Brazil 

 (Chapada — campo). November. Three specimens pectoralis n. sp. 



Body nearly as in the two preceding, but blackish and with the lustre not polished 

 but somewhat alutaceous, the outline more sharply rhomboidal and the 

 sculpture still feebler; beak (c 71 ) only about as long as the elytra, similar in its 

 smooth, cylindric, strongly and evenly arcuate form and more punctate 

 basal part, the antennae subsimilar and near basal third; prothorax some- 

 what longer than in striatula, almost as long as wide, similar in outline and 

 base but with the discal punctures smaller and remote, infinitesimal and 

 barely discoverable, and, at the sides, very much smaller than in either of 

 the preceding; scutellum nearly similar; elytra somewhat shorter but of 

 nearly the same outline, one-half longer than wide, three-fifths longer than 

 the prothorax; oblique sides slightly more arcuate; striae internally finer, 

 almost obsolete and with finer punctures, externally with the grooves much 

 less coarse and less strongly punctate; punctures beneath similarly coarse, 

 well separated and finely squamiferous, the abdomen more finely and sparsely 

 punctate, similar in the male, the prosternum in that sex, as in striatula, 



