184 Memoirs on the Coleoptera 



slender white squamules. The beak is strongly arcuate, rather 

 slender, strongly sculptured, not very abruptly separated from the 

 front and with the mandibles nearly as in the preceding — arcuate, 

 falciform, slightly decussate at apex, but prominent when closed. 

 The antennae are medial, the scape far from attaining the eye, the 

 first funicular joint as long as the next three, the second nearly 

 twice as long as wide, the club oval, well developed and usually 

 longer than the preceding five joints, somewhat abrupt in formation. 

 Trie prosternum is nearly flat ( 9 ), or longitudinally fossa te between 

 the short erect ante-coxal spines (o 71 ), the legs rather long and slen- 

 der, the femora mutic, as usual in this part of the tribe. The 

 prothorax is conical, or with moderately arcuate sides, in the former 

 case often without, in the latter with, apical tubulation. The 

 species are somewhat numerous, those at hand being the following; 



Prothorax almost evenly conical, with the sides straight or but very feebly 

 arcuate; antenna? medial; elytra shorter and less narrowed posteriorly, the 

 slender white squamules in regular single lines, the lines however never quite 

 entire and sometimes short; male so far as noted always with two short 

 prosternal spines 2 



Prothorax broader, with more converging and anteriorly more arcuate sides, and 

 with tubulate apex; antennae beyond the middle; elytra more elongate and 

 more attenuated posteriorly, the white interstitial squamules widely isolated 

 in abbreviated series; prosternum of the male without ante-coxal spines. . . .8 



2 — Pronotum with longitudinal rugulosity throughout 3 



Pronotum with the rugae not extending to the base, sometimes with a large part 

 of the disk devoid of rugae and very smooth, polished 6 



3 — White squamules of the strial intervals close-set in even single line, the lines, 

 however, never entire and often short 4 



White interstitial squamules more widely separated; prothorax arcuate at the 

 sides and feebly tubulate, the tubulation less distinct than in the bidlatus 

 section 5 



4 — Form rhomboid-oval, black, feebly shining, less so (9), the fine whitish 

 squamules sparsely scattered toward the sides of the prothorax and feebly 

 along the narrow median line, clustered slightly at base of the elytra, espe- 

 cially near the scutellum and in close-set interstitial lines behind the middle, 

 sometimes wanting latero-apically; on the under surface distinct, though 

 well separated, denser on the met-episterna; beak strongly arcuate, rather 

 longer and less stout in the male, with the piceous antennae medial as usual, 

 somewhat more than half as long as the body; prothorax conical, with only 

 very feebly arcuate sides, nearly as long as wide, with coarser rugulosity (cf), 

 distinctly wider than long, less shining and with finer rugulosity (9), the 

 basal lobe small, feeble, obtusely cuspidiform; scutellum small, glabrous, 

 impressed and narrower than long; elytra a fourth longer than wide, wider 

 than the prothorax and nearly twice as long, less in the male; grooves coarse 

 and deep; intervals rather distinctly wider than the grooves, with single 

 series of somewhat strong, well separated punctures; male abdomen convex, 

 minutely, loosely squamulose, feebly impressed medio-basally, the prosternal 

 spines half as long as the tibiae. Length 2.3-2.75 mm.; width 1. 05-1. 3 

 mm. Brazil (Chapada). On flowers in forest clearings. May and Novem- 

 ber. Five specimens caducus n. sp. 



Form much narrower, elongate-suboval, black, with piceo-rufous elytra and legs, 



