1 86 Memoirs on the Coleoptera 



even single series of very distinct punctures; male with the abdomen convex, 

 shallowly and indefinitely though distinctly impressed medio-basally, the 

 prosternal spines more developed than usual, erect, rufous and about as long 

 as the hind tibiae. Length 3.0 mm.; width 1.35 mm. Brazil (Chapada). 

 November. One specimen laevicollis n. sp. 



Body smaller, narrower and rather less rhomboid, black, shining, the sparse 

 hair-like squamules nearly similar, as usual shorter, somewhat less slender, 

 more numerous and white beneath, and dense on the met-episterna; beak 

 (o 71 ) nearly similar and very strongly arcuate, but relatively a little longer, 

 being distinctly over half as long as the body; antennae fuscous and evidently 

 shorter; prothorax subsimilar throughout, but not quite so nearly as long 

 as wide and with the apex more fully half as wide as the base; scutellum 

 smaller and narrower; elytra narrower and relatively longer, a third longer 

 than wide, narrowly parabolic, slightly wider than the prothorax and four- 

 fifths longer; grooves similar; intervals not quite so distinctly wider than 

 the grooves, and, in some cases, barely visibly so, the punctures of the single 

 series not so strong; male with the slender rufous ante-coxal spines about 

 three-fourths as long as the hind tibiae in the type, but, as usual, probably 

 variable in length. Length 2.65 mm.; width 1.2 mm. Brazil (Para), — 

 Baker. One specimen castus n. sp. 



8 — Elytra moderately oblique at the sides and distinctly arcuate 9 



Elytra more elongate, less oblique and but very feebly arcuate at the sides, more 

 narrowly and strongly rounded at apex 10 



9 — Outline almost evenly oval, convex, black and shining, the sparse slender 

 squamules throughout of the caducus order, except being modified on the 

 elytra as stated; beak moderately slender, feebly tapering, strongly sculp- 

 tured, a third longer than the head and prothorax and more arcuate basally 

 than distally, the antennae piceous, slightly beyond the middle; prothorax 

 rather convex in lateral profile, fully two-fifths wider than long, the converg- 

 ing sides broadly, subevenly arcuate; tubulation more than half as wide as 

 the base; rugulosity nearly as in caducus; scutellum small, impressed along 

 the middle; elytra a third longer than wide, sharply parabolic, only slightly 

 wider than the prothorax and twice as long; grooves deep, about half as 

 wide as the intervals, the punctures of which are strong and in single loose 

 series; abdomen strongly convex, evenly punctate and with minute slender 

 squamules. Length 2.65 mm.; width 1.25 mm. Brazil (Santarem). One 

 female specimen bullatus n. sp. 



Outline somewhat broader and decidedly more rhomboid, the humeri being more 

 prominent though rounded; vestiture similar; beak (d") nearly as in bullatus 

 but a little longer and more evenly arcuate; antennae piceous, similarly 

 beyond the middle, the scape a little longer; prothorax almost two-fifths 

 wider than long, the converging sides less arcuate, nearly straight, rounding 

 anteriorly to the abrupt tubulation, which is distinctly more than half as 

 wide as the base and, as usual, less sculptured than the disk; rugulosity 

 similar; scutellum slightly larger, similarly obtrapezoidal and impressed 

 along the middle; elytra wider and rather longer, rapidly parabolic, a third 

 longer than wide, evidently more than twice as long as the prothorax; grooves 

 and intervals nearly similar, except that the punctures of the interstitial 

 series are less widely separated; male abdomen with a deep oval subglabrous 

 medio-basal impression, much more conspicuous than in the caducus section, 

 the presternum evenly albido-squamose and unimpressed, the coxae very 

 narrowly separated as usual. Length 2.75-2.85 mm.; width 1. 3-1 .35 mm. 

 Brazil (Chapada). On flowers in clearings. May and November. Two 

 specimens adductus n. sp. 



10 — Body very elongate-subrhomboid, feebly shining, black; beak rather thicker 



