48 Memoirs on the Coleoptera 



except basally, where the fine sculpture is dense and strigilate and with a 

 distinct medial carina; head strongly but very sparsely punctate; lateral 

 grooves beyond the antennae very deep, conspicuous; antennal club shorter 

 than the funicle; prothorax a fourth wider than long, the sides very strongly 

 converging and distinctly and evenly arcuate from the base; basal lobe 

 feebly, sparsely punctulate, obtusely rounded at tip, the lateral impressions 

 small and feeble; elytra but slightly elongate, hardly a fourth wider than the 

 prothorax, ogival, with narrowly obtuse apex, the humeri prominent and 

 somewhat narrowly .rounded ; punctures of the fine subobsolete striae very 

 minute, remote and feeble; legs with the punctures strong but separated, 

 the tooth of the hind tibiae small, abrupt, broadly triangular; abdominal 

 plaque feebly, subacutely impressed, moderately and sparsely punctate. 

 Length 4.0 mm.; width 2.8 mm. Brazil (Rio de Janeiro). November. A 



single male specimen subrhombicus n. sp. 



Scutellum flat, strongly, evenly and closely punctate 29 



29 — Body in outline as in the preceding, but rather less abbreviated; beak not 

 very thick, feebly and evenly arcuate, short, three-fifths as long as the pro- 

 thorax, shining, subcylindric, the sides slightly flattened and loosely, moder- 

 ately punctate, the upper surface and head even and extremely minutely, 

 sparsely and almost invisibly punctulate; antennae medial, the club distinctly 

 shorter than the funicle, the grooves beyond the point of insertion rather short 

 but deep; prothorax as in the preceding but only very slightly wider than 

 long, the basal lobe similar though a little more obtuse, truncate; scutellum 

 quadrate, slightly wider than long; elytra nearly as in the preceding but 

 not quite so wide, a few of the discal striae visible and elongate-subfoveiform 

 at base — as usual throughout the genus; abdominal plaque nearly flat, 

 strongly, sparsely punctate; outer tibial tooth large, triangular, very acute 

 at tip. Length 4.2 mm.; width 3.0 mm. Brazil (Santarem). One example. 



inconspicuus n. sp. 

 Body a little larger and more obtuse behind, rhombic-ovoidal; beak nearly similar 

 but somewhat longer, less cylindric, the flattened sides more coarsely and 

 densely punctato-rugose, differing very much on the upper surface, which is 

 very densely, longitudinally and finely punctato-strigilate but not at all 

 carinulate, becoming extremely minutely and sparsely punctulate distally; 

 head very finely, sparsely punctate; antennal club distinctly shorter than the 

 funicle; prothorax as in the preceding but still more nearly as long as wide, 

 with still more obtuse and more punctate basal lobe; scutellum evenly 

 quadrate; elytra oval, very much more broadly obtuse at apex and with 

 still rather more arcuate sides and similar humeri, barely longer than wide, a 

 fifth wider than the prothorax; striae similarly very fine and obsolescent 

 though somewhat impressed, so that they are more evident by laterally 

 oblique illumination, the punctures extremely minute; hind tibial tooth 

 small, broadly triangular; femora finely, sparsely punctate, the tibiae rather 

 coarsely and loosely but irregularly so; abdominal plaque moderately and 

 sparsely punctate, almost flat, the nearly flat concavity having two feeble 

 subbasal convexities. Length 4.5 mm.; width 3.4 mm. Brazil (Tijuca). 



November. A single example punctiscuris n. sp. 



30 — Elytral striae groove-like only toward the suture 31 



Elytral striae deeply grooved everywhere, except on the flanks 37 



31 — Antennal club relatively less stout, elongate-oval and fully as long as the 

 funicle. Body subrhomboid-oval, polished throughout; beak three-fourths 

 as long as the prothorax, rather thick, subcylindric, slightly flattened at the 

 sides and very feebly arcuate, strongly but not very densely punctate laterad, 

 minutely, sparsely punctate dorsally, the head sparsely punctate; prothorax 

 but little wider than long, the converging sides evenly and rather strongly 



