312 Memoirs on the Coleoptera 



It is probable that these species inhabit flowers in the forest 

 clearings. 



Sibariops Csy. 



This is a large genus, distributed from the nearctic to the neo- 

 antarctic regions, but not occurring, so far as known, along the 

 Pacific coast. While the body is very much as in the preceding 

 genus, the beak in both sexes, and in all the species known to me, 

 is wholly different, being very slender, evenly cylindric and very 

 feebly sculptured, often tumid dorsally at base just before the 

 feeble separating impressed line. The antennae are more or less 

 slender, with very moderate oval club, the prosternum flat, moder- 

 ately separating the coxae, unarmed in the male or sometimes with 

 two moderate slender spines. The rather numerous Brazilian 

 species are exactly similar in habitus to those from nearctic America, 

 as well as evanescens and ceneola Chmp., which I happen to have 

 from Central America. The Brazilian species at hand are as follows : 



Body much larger in size, more broadly oblong-suboval. Black, the legs also 

 black and notably short; surface subglabrous, the elytra with single series 

 of minute subfuscous squamules, those beneath whiter and a little less 

 minute, sparse, not closer on the met-episterna; beak (9) very siender, 

 shining, evenly cylindric, slightly arcuate, finely, subserially and sparsely 

 punctate, distinctly tumid above at base and almost as long as the prothorax; 

 antennae medial, slender, the notably elongate first funicular joint as long as 

 the next two, the second also as long as the succeeding two; prothorax fully 

 a fourth wider than long, the parallel sides straight, rounding and converging 

 in apical two-fifths; truncate apex four-sevenths as wide as the base; punc- 

 tures rather coarse, deep, separated by not quite twice their diametersand 

 smaller near the smooth median line; elytra a third longer than wide, very 

 slightly wider than the prothorax and twice as long, the sides parallel, very 

 gradually rounding behind through the obtuse apex, with feebly reentrant 

 sutural angle, the humeri distinctly tumid; striae strong and abrupt, deep 

 and evidently punctate, a third as wide as the intervals, having well spaced 

 infinitesimal punctures, somewhat confused and barely observable; abdomen 

 finely but strongly, rather closely punctured. Length 3.4 mm.; width 1.4 

 mm. Brazil (Chapada). November. One specimen.. . . puncticollis n. sp. 



Body small in size and usually much narrower 2 



2 — Upper surface almost glabrous; squamules, if present, extremely minute, 



fine, sparse and inconspicuous 3 



Upper surface sparsely but more or less conspicuously albido-squamulose 4 



3 — Body elongate-suboval, convex, deep black and polished, virtually glabrous, 

 the squamules in single insterstitial series extremely small and slender, also 

 on the under surface; legs and antennae piceo-rufous; beak (cf) slender, 

 cylindric, smooth, rather closely punctate basally, broadly and very feebly 

 tumid above basally, very slightly arcuate, four-fifths as long as the pro- 

 thorax, the antennae rather short, only slightly ultra-median, the second 

 funicular joint quadrate, the first segment of the club rather more than 

 half the mass; prothorax very nearly as long as wide, the sides feebly, 

 subevenly arcuate, almost parallel posteriorly; apex nearly three-fifths as 

 wide as the base; punctures fine and rather sparse; elytra slightly over 

 one-half longer than wide, slightly wider than the prothorax and not quite 



