346 Memoirs on the Coleoptera 



the head and prothorax, the antennae rufous, medial; prothorax a fourth 

 wider than long, the parallel sides very feebly arcuate, rounding in about 

 apical third, the non-tubulate truncate apex more than half as wide as the 

 base; punctures moderate, distinctly separated, the smooth median line 

 rather wide; squamules slender, not dense, largely wanting in a broad 

 median area ; elytra a third longer than wide, equal in width to the prothorax 

 and three-fourths longer, the sides parallel and straight, obtusely rounding 

 in about apical third; grooves moderate; intervals with strong uniserial 

 punctures, the squamules slender, loosely scattered, largely brown on the 

 second and third. Length 2.6 mm.; width i.o mm. Brazil (Chapada). May. 

 On flowers in clearings. One specimen subcylindricus n. sp. 



Pale scales above yellow and close-set, white beneath, dense on the met-episterna; 

 body much larger, convex and broadly oval; thoracic apex tubulate 3 



3 — Thoracic tubulation (c?) long and abruptly formed, only two-fifths as wide 

 as the base; elytra with the paler uniserial squamules, except at base and 

 along the suture, dark brown and very inconspicuous. Broadly oval, convex, 

 rather shining, piceo-rufous, the elytra blacker, the legs piceous; beak (o 71 ) 

 strongly sculptured, not very slender, more arcuate beyond the middle and 

 equal in length to the elytra, the slender rufous antenna? submedial; pro- 

 thorax large, somewhat more than a fourth wider than long, the sides broadly, 

 strongly arcuate, becoming gradually straighter and parallel behind the 

 middle; punctures rather small but deep and sparse, becoming gradually 

 coarse, rugose and subconfluent toward the sides, the squamules slender and 

 somewhat sparse, wanting broadly on the disk; elytra broadly oval, a fifth 

 longer than wide, very slightly wider than the prothorax and two-fifths 

 longer, the grooves coarse and deep, fully half as wide as most of the intervals, 

 the interstitial punctures strong and well separated; prosternal spines long, 

 slender, testaceous, subequal in length to the prothorax; abdomen more 

 finely and sparsely squamulose medio-basally but not impressed. Length 

 3-65-3-85 mm.; width 1. 75-1. 85 mm. Brazil (Chapada). May. On 

 flowers in clearings. Two male specimens obesulus n. sp. 



Thoracic tubulation very gradually formed, shorter and feebler in the female; 

 discal serial squamules of the elytra brown, mingled with paler 4 



4 — Body throughout in form, coloration, lustre and vestiture as in the preceding; 

 beak (a 71 ) longer, more slender, strongly and more evenly arcuate and longer 

 than the elytra, or ( 9 ) evidently shorter, more slender, more feebly arcuate, 

 feebly tapering, smoother distally but subsimilar basally; antennae slender, 

 rufous, medial (9), just visibly beyond (cf); prothorax large, throughout 

 nearly as in the preceding, except that the tubulation is gradual and a little 

 wider, three-sevenths as wide as the base, shorter and still wider in the 

 female; elytra throughout nearly as in the preceding, except that the strong 

 interstitial punctures are more close-set, the sides strongly rounded, with 

 very obtuse apex (cf), or more oblique and less arcuate ( 9 ); male abdomen 

 distinctly impressed, as well as more feebly squamulose, medio-basally, the 

 slender testaceous prosternal spines about as long as the prothorax; female 

 smaller than the male. Length 3.15-3.9 mm.; width 1. 35-1 .8 mm. Brazil 

 (Chapada). May. On flowers in clearings. Four specimens. 



suturalis n. sp. 



Body in the female somewhat as in the same sex of suturalis, but smaller and 

 much more narrowly oval, nearly similar in coloration and vestiture, except 

 that the scales beneath, on the hind body, are smaller and less dense; beak 

 ( 9 ) nearly similar but rufous and shorter, being only as long as the head 

 and prothorax, the latter narrower, scarcely a fourth wider than long, the 

 sides more parallel and not so arcuate, more rapidly rounding anteriorly 



