Brazilian Baring 455 



circular, not very convex, even and densely punctured; posterior prosternal 

 lobe flat, loosely and strongly punctate, broadly sinuate at apex. Length 

 2.4 mm.; width 1.12 mm. Brazil (Santarem). One specimen. 



vapidus n. sp. 



13 — Prothorax distinctly and rather sharply tubulate at apex; body compara- 

 tively large in size. Form suboblong-oval, convex, rather shining and deep 

 black throughout; elytra with series of minute squamules; beak (0") moder- 

 ate in thickness, feebly and evenly arcuate, three-fourths as long as the 

 prothorax, strongly, loosely punctate and not at all swollen dorsally at base; 

 antennae black, slightly beyond the middle, the basal segment of the club 

 subglabrous; prothorax a fifth wider than long, the sides subparallel, feebly 

 arcuate, rapidly rounding in apical third to the tubulation, which is fully 

 half as wide as the base; basal lobe gradual, the tip narrowly rounded; punc- 

 tures rather coarse, deep, close, not so coarse and more separated medially, 

 sometimes with a distinct median smooth line; scutellum free, well developed 

 and transverse; elytra obtusely oval, with rather evident humeral swellings, 

 evidently wider than the prothorax and two-thirds longer; grooves somewhat 

 coarse, punctured, exarate distally; intervals alutaceous, strongly, rather 

 closely and uniseriately punctate, twice as wide as the grooves; pygidium 

 small, semicircular, moderately and evenly convex; bifurcating prominence 

 of the presternum scarcely elevated but polished, contrasting with the 

 subopaque canal; posterior lobe broadly truncate. Length 3.0-3.2 mm.; 

 width 1. 4-1 .45 mm. Brazil (Chapada — forest). March and November. 



Three specimens, apparently all males valens n. sp. 



Prothorax not definitely tubulate at apex; body much smaller in size 14 



14 — Basal thoracic lobe narrowly truncate at apex. Form rather narrowly oval, 

 convex, black, the tarsi piceous, somewhat shining, the elytra alutaceous; 

 beak (o 71 ) short, rather thick, even in diameter, very feebly arcuate, strongly, 

 loosely punctate, not swollen above at base and barely more than two-thirds 

 as long as the prothorax; antennae obscure rufous, slightly beyond the middle; 

 prothorax a fourth wider than long, the sides feebly converging and slightly 

 arcuate, gradually rounding and oblique in apical two-fifths; apex feebly 

 constricted dorsally, half as wide as the base; punctures moderately coarse, 

 deep, very close throughout, only slightly separated medially, without smooth 

 line, the scutellum free, smooth, shining and subtransversely oval; elytra 

 evenly oval, a third longer than wide, slightly wider than the prothorax and 

 four- fifths longer; grooves moderate, only a little coarser distally, feebly 

 punctate; intervals dull, with single series of rather coarse but very shallow, 

 moderately distant punctures; pygidium small, normal, evenly and some- 

 what strongly convex; bifurcating process of the presternum low but more 

 shining, the flat posterior lobe broadly sinuato-truncate; abdomen as usual, 

 without sexual marks. Length 2.28 mm.; width 0.8 mm. Brazil (Chapada). 



May. One specimen, on flowers in forest clearings sodalis n. sp. 



Basal thoracic lobe rounded at tip 15 



15 — Upper surface strongly micro-reticulate and almost opaque throughout. 

 Body rather broadly oval, convex; beak (o 71 ) very short, moderately thick, 

 even in diameter, not swollen basally above, moderately punctate, evenly 

 and feebly arcuate and three-fourths as long as the prothorax; antennae 

 slightly beyond the middle; prothorax rather large, a fourth wider than 

 long, the sides slightly converging and feebly, subevenly arcuate, only very 

 little more so anteriorly; apex rather more than half as wide as the base; 

 punctures smaller than usual, close, becoming evidently separated medially, 

 without impunctate line; scutellum somewhat free, subtransversely oval, 

 partially sculptured; elytra evenly and obtusely oval, a fifth longer than 



