Brazilian Barinle 287 



as usual, feebly arcuate, moderately thick, dull, feebly squamulose and as 

 long as the prothorax, somewhat less thick than in the preceding, the piceous 

 antenna? similarly at three-fifths; prothorax as in suffusus throughout, 

 except that the punctures are deeper and somewhat less dense and the 

 truncate apex slightly wider, being evidently more than half as wide as the 

 base; elytra distinctly shorter, barely a third longer than wide, oval, with 

 the humeri rather more pronounced, more obviously wider than the prothorax, 

 not quite twice as long; grooves and intervals nearly sirhilar; anterior 

 femora normal; male abdomen with the medio-basal impression rather deep 

 and evidently less squamulose. Length 2.3 mm.; width 0.85 mm. Brazil 



(Santarem). One specimen fluminalis n. sp. 



Form narrower than in any of the preceding, with narrower and more cylindric 

 prothorax, black, the elytra piceo-rufous; vestiture whitish and rather 

 conspicuous, the pronotal squamules abundant, uniform and not so fine as 

 in the preceding, coarser on the elytra and narrowly confused on some of the 

 intervals, dense beneath, the scutellum as in the preceding; beak (a 71 ) rather 

 slender and somewhat shorter than the prothorax, shorter and much thinner 

 than in any of the preceding and less sculptured, rufescent, or ( 9 ) not thinner 

 but more arcuate, gradually tapering distally and as long as the head and 

 prothorax; antennae rufous, at three-fifths (o 71 ) or four-sevenths (9); pro- 

 thorax cylindric, with the sides parallel and straight, rounding and oblique 

 in apical third, almost longer than wide (cf ), just visibly wider than long ( 9 ), 

 the punctures moderately fine, dense; elytra oval, rather obtuse at apex, 

 a third longer than wide, distinctly wider than the prothorax — especially 

 in the male — -and not quite twice as long; legs shorter than in the preceding, 

 the femora normal; male abdomen almost unmodified. Length 2.0-2.2 

 mm.; width 0.72-0.8 mm. Brazil (Chapada — forest). June, August and 

 October. Four specimens egens n. sp. 



The type of striatopunctatus was said to be the female in my 

 original description, because of the total absence of abdominal 

 modification, but the very short and narrowly cylindric beak, with 

 the antennae well beyond the middle, may possibly indicate the 

 male. The species is very peculiar in this way, as well as in the 

 almost completely glabrous scutellum. 



Nicentridia n. gen. 



In general structural features this genus agrees very well with 

 Nicentrus, but it differs in the minute size of the body, more sepa- 

 rated anterior coxae, in having a broad basal abdominal impression 

 margined by long erect hairs in the male, and in having the pro- 

 sternum tumid before each coxa. The beak is rather slender, only 

 feebly arcuate and similarly not separated from the head by an 

 obvious impression, with the mandibles similar; antennae beyond 

 the middle in the male, the first funicular joint fully as long as the 

 next three, the club abrupt, somewhat briefly oval, with its first 

 segment subequal to half the mass. The prosternum is flat and 

 separates the coxae by half their width. The body is very uniformly 

 and closely clothed above with pale narrow squamules, confused on 

 the strial intervals. There are two species as follows: 



