396 Memoirs on the Coleoptera 



prothorax very convex — -viewed in profile, nearly two-fifths wider than long, 

 the sides parallel and feebly arcuate, rapidly rounding and oblique in about 

 apical third, the distinct tubulation much less than half the basal width; 

 surface minutely, sparsely punctate, much more distinctly so and then rugu- 

 lose toward the sides, with the usual basal series; scutellum as in the pre- 

 ceding; elytra as in sortitus, but more evidently punctulate toward the sides, 

 the humeri rather distinctly swollen; pygidium nearly similar but larger; 

 body larger, similarly punctured beneath; abdomen without sexual modi- 

 fication. Length 3.6 mm.; width 1.8 mm. Brazil (Chapada). December. 

 One female specimen chapadanus n. sp. 



8 — Body much larger, broadly ovoidal, deep black, smooth and polished, glabrous 

 as usual; beak long, slender, strongly, evenly arcuate, very smooth and 

 cylindric, even and not at all thickened at base and three-fifths as long as 

 the body; antennae near basal third, with the first funicular joint unusually 

 elongate, as long as the next four joints; club as long as the preceding five, 

 cylindric, with ogival apex; prothorax only moderately convex in profile, 

 three-fifths wider than long, the sides distinctly, subevenly arcuate, widest 

 very near the base; tubulation strong, nearly half as wide as the base; 

 surface smooth, very feebly subrugulose at the extreme sides, the tubulation 

 with some minute punctulation, the basal series very fine; scutellum tri- 

 angular, more transverse than in any of the preceding, twice as wide as long; 

 elytra but little longer than wide, obtusely oval, the oblique sides feebly 

 arcuate behind the notably tumid humeri, evidently wider than the prothorax 

 and nearly two-thirds longer; striae distinct laterally and toward base, 

 deeply and coarsely exarate at apex, but elsewhere very fine, feeble and 

 distantly punctulate; pygidium as usual; under surface sparsely punctate, 

 the abdomen smooth, with the first suture as coarse and deep as 2-4, being 

 very different from the extremely fine or obsolete first suture of the other 

 species. Length 4.9 mm.; width 2.7 mm. Brazil (Santarem). One female 

 specimen oblongulus n. sp. 



Body small, smooth and polished, dark rufous, the legs and beak black, the elytra 

 more obscure than the pronotum; beak short, barely as long as the head 

 and prothorax, evenly and moderately arcuate, slender and smooth, feebly 

 thickened and distinctly punctured at base; antenna? at basal third, having 

 the usual structure; prothorax rather strongly convex in profile, two-fifths 

 wider than long, the sides strongly, evenly arcuate beyond, subparallel and 

 feebly arcuate behind, the middle, the tubulation very short and feeble and 

 almost half as wide as the base; surface smooth, feebly, longitudinally 

 rugulose at the sides, the basal series close-set, but broadly subobsolete at 

 the middle; scutellum small, ogival, as wide as long as usual; elytra obtusely 

 oval, a fifth longer than wide, with distinctly but obtusely tumid humeri, 

 evidently wider than the prothorax and three-fifths longer; grooves deep 

 and sharply defined, smooth, fine suturally, the intervals smooth; pygidium 

 small, vertical, densely punctate and semicircular; under surface closely, 

 strongly punctured, the abdomen finely and sparsely, the first suture very 

 fine and obsolescent. Length 2.85 mm.; width 1.5 mm. Brazil (Chapada). 

 May. In forest clearings, on flowers. One female specimen. 



rufopiceus n. sp. 



9 — Form stout, subcuneiform, small in size, polished, black, with aeneous lustre, 

 each elytron very feebly and nubilously rufous at the centre and near apex; 

 beak evenly arcuate, cylindric, moderately slender, finely, loosely punctulate, 

 even in thickness throughout and somewhat longer than the head and pro- 

 thorax; antennae near basal third; prothorax rather strongly convex in 

 profile, three-fifths wider than long, the sides parallel and strongly arcuate, 



