Brazilian Barinje 451 



pubescent club. The prothorax is never more than feebly tubulate 

 at apex, and the scutellum varies from minute and rounded to 

 transversely quadrate in form; the elytra are moderately grooved, 

 individually rounded at apex, and the pygidium is small and semi- 

 circular, the tarsi small and slender, with the claws contiguous at 

 base and generally feebly but sometimes quite notably diverging. 

 The material at hand may be classified and described as follows: 



Posterior lobe of the presternum deeply channeled, sometimes affording shelter 

 for the tip of the beak, sinuate or deeply emarginate behind, extending to the 



middle coxae and covering the entire mesosternum 2 



Posterior lobe flat, feebly channeled in tenuirostris 8 



2 — Body narrowly oval, the pronotum very coarsely punctate 3 



Body more broadly oval, the pronotum less coarsely punctate, though still very 

 conspicuously, the beak usually a little thicker in both sexes; posterior 

 angles of the prosternal lobe much produced, but obtusely rounded at tip.. 6 



3 — Posterior angles of the prosternal lobe acute 4 



Posterior angles broadly rounded 5 



4 — Form narrowly oval, convex, shining, deep black and glabrous, the punctures 

 of the under surface each with a minute slender squamule as usual; beak 

 ( 9 ) short, barely as long as the prothorax, straight, moderately slender and 

 sculptured, slightly inflated and curved at base; antennae slightly behind 

 the middle; prothorax a fifth wider than long, the sides somewhat converging 

 and nearly straight, rapidly rounding and oblique in apical two-fifths, the 

 truncate apex fully half as wide as the base; very coarse deep punctures 

 separated medially by barely half their diameters, but contiguous laterally, 

 without smooth median line; scutellum close-set, minute and rounded; 

 elytra two-fifths longer than wide, slightly wider than the prothorax and 

 not quite twice as long, evenly rounded behind, the sides sensibly oblique 

 and feebly arcuate; grooves deep, punctured, half as wide as the intervals, 

 which are minutely, linearly punctulate; pygidium strongly convex, closely 

 punctate; abdomen loosely and moderately punctate, the sterna coarsely 

 and more closely. Length 2.7 mm.; width 1.2 mm. Brazil (Rio de Janeiro). 



November. One specimen cribricollis n. sp. 



Form less narrowly ovoidal, deep black, rather shining, but with the interstices 

 faintly alutaceous and micro-reticulate; beak ( 9 ) somewhat slender, feebly 

 arcuate, shining and as long as the head and prothorax, gradually rugose 

 basally and not inflated, though slightly more bent, at base; antennaa 

 somewhat behind the middle; prothorax a fourth wider than long, the sides 

 parallel and nearly straight, rounding and oblique in apical two-fifths; 

 punctures very coarse, separated by nearly half their diameters medially, 

 contiguous laterally, without smooth median line; scutellum larger than in 

 the preceding and freer, with some punctures; elytra more evenly oval, the 

 arcuate sides merging more gradually into the rather broadly rounded apex, 

 three-sevenths longer than wide, a fifth wider than the prothorax and twice 

 as long; grooves half as wide as the minutely, uniserially punctate intervals 

 and distinctly, catenulately punctate along the bottom; pygidium convex, 

 loosely cribrate; abdomen much more strongly and closely punctate than in 

 the preceding. Length 3.0 mm.; width 1.23 mm. Brazil (Chapada — forest). 

 November. One specimen. Another specimen from the same locality is 

 very similar, but a little smaller and with the coarse thoracic punctures 

 contiguous or virtually so throughout; as the beak is a little shorter and the 

 antennae submedial, it may be the male, but there are no abdominal modi- 

 fications vafer n. sp. 



