352 Memoirs on the Coleoptera 



i 8 — Body oval, more oblong in the male, deep black and shining; squamules 

 whitish, very slender, sparse and inconspicuous above, more distinct and in 

 single lines on the elytra, close-set beneath, except on the propleura; beak 

 (o 71 ) evenly, moderately arcuate, longitudinally sculptured and much longer 

 than the head and prothorax, or ( 9 ) slightly shorter, more slender and 

 smoother; antennae submedial; prothorax (o 71 ) nearly as long as wide, with 

 evenly arcuate sides, becoming parallel basally, or ( 9 ) smaller and shorter, 

 with slightly more converging sides; feeble tubulation half as wide as the 

 base ( 9 ), a little narrower (cf); punctures strong and close; smooth median 

 line distinct and subentire (o 71 ), or short and less distinct ( 9); elytra oval, 

 nearly a fourth longer than wide, less obtuse behind in the female, slightly 

 wider than the prothorax and two-thirds (d 71 ) to three-fourths (9) longer; 

 grooves deep, not quite as wide as the intervals, which have close strong 

 uniseriate punctures; male abdomen narrowly and very feebly impressed 

 medio-basally, the prosternal spines, when well developed, slender, testa- 

 ceous, upwardly arcuate and three-fourths as long as the prothorax. Length 

 2.3-2.8 mm.; width 1.1-1.28 mm. Brazil (Chapada). May. On flowers. 

 Twelve specimens puncticollis n. sp. 



Body still more broadly oval, black and shining, squamules whitish, sparse above, 

 shorter and still more inconspicuous than in the preceding and more distinctly 

 brown in the elytral series, except toward suture and base, more separated 

 beneath; beak ( 9 ) similar, a little longer than the head and prothorax, the 

 antennae scarcely visibly behind the middle; prothorax shorter, a third 

 wider than long, the slightly converging sides very feebly arcuate, rounding 

 in about apical third, the apex fully half as wide as the base; punctures as 

 in the preceding but distinctly coarser, similarly separated by half their 

 diameters; elytra relatively shorter and broader, with more oblique sides, 

 only a fifth or sixth longer than wide, the grooves very deep, two-thirds as 

 wide as the intervals, which have the close uniseriate punctures coarser. 

 Length 2.8 mm.; width 1.35 mm. Brazil (Santarem). One specimen. 



sulcatulus n. sp. 



Body short, oblong-oval, narrower and less inflated than the preceding, deep black, 

 rather shining, the legs rufous; squamules above yellowish-white, very sparse 

 on the pronotum, somewhat glistening in single loose series on the elytra, 

 rather small and separated beneath; beak (cf) arcuate, dull and longer than 

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

 fourth wider than long, nearly as in the preceding in outline, the sides more 

 parallel ; punctures similarly coarse, somewhat more separated but on the whole 

 by scarcely more than half their diameters, the median smooth line more dis- 

 tinct; elytra a sixth longer than wide, broadly oval, the sides more rounded 

 and less oblique than in sulcatulus, a fifth wider and one-half longer than 

 the prothorax, the grooves much less coarse, half as wide as the intervals, 

 which have the serial punctures not quite so coarse; prosternal spines short 

 in the type, barely longer than the femoral thickness. Length 2.5 mm.; 

 width 1.2 mm. Brazil (Para), — Baker. [Limnobaroides bakeri Csy., — 

 Mem. Col. IX, p. 495.] bakeri Csy. 



Body smaller than in sulcatulus and not so broadly oval, black, rather shining; 

 squamules slender, sparse on the pronotum, yellowish to whitish, distinct 

 throughout and pale in the interstitial series; beak slender, somewhat longer 

 than the head and prothorax, the head and beak missing in the only male at 

 hand; prothorax slightly wider than long, the sides feebly converging and 

 very slightly arcuate, rounding apically to the rather abrupt and short 

 tubulation, which is half as wide as the base ( 9 ), a little less (o 71 ) ; punctures 

 coarse, deep and dense, very narrowly separated; medial smooth line narrow, 



