Brazilian Baring 253 



and closely punctate, the basal lobe well developed; scutellum also rather large, 

 subquadrate; elytra large, evenly oval, almost a third longer than wide, evidently 

 wider than the prothorax and nearly three times as long; surface moderately 

 and closely punctate, the grooves moderate. Length 4.3 mm.; width 2.45 mm. 

 Brazil (Santarem). A single female example. 



Certain characters mentioned by Boheman in describing Centrinus 

 bicuspis lead me to think that this species may come closer to the 

 true Centrinus than any other known to me at present; it is at any 

 rate a strikingly isolated form in the Centrinini. 



Odontocorynus Schon. 



The three species from the Amazon Valley, here brought to 

 notice, so closely resemble the ordinary nearctic type, that one 

 would naturally fancy them to have been taken in Pennsylvania; 

 they differ greatly from most of the larger, elongate Mexican species 

 of the genus. They are rather closely allied among themselves, 

 belong to the salebrosus division of the genus, as defined in my 

 previous revision, and may be described as follows: 



Thoracic basal lobe extremely short, broad and reflexed, with a narrow deep 

 medial sinus; abdomen in the male distinctly impressed medio-basally 

 Body oval, but with rather prominent humeri, deep black, only feebly 

 shining, the legs not pale; beak (c?) strongly sculptured, straight, feebly 

 bent apically and abruptly at the extreme base, as long as the head and 

 prothorax; antenna black, near apical fourth, the outer two abbreviated 

 funicular joints acute within, and each with a long seta; club large, as long 

 as the six preceding joints, broadly ovoidal, with an acute tooth at the side 

 of the base; prothorax a third wider than long, the sides parallel and feebly 

 arcuate, gradually rounding anteriorly and becoming very oblique at apex; 

 squamules very inconspicuous; punctures strong and close, smaller medially, 

 the impunctate line obsolete; scutellum subquadrate, densely albido-squa- 

 mose; elytra triangular, with arcuate sides and rather strongly rounded tip, 

 almost a third longer than wide, more than a fourth wider than the prothorax 

 and nearly twice as long; grooves rather coarse, deep, opaque; intervals 

 coarsely, closely punctate — in single line on the sublateral intervals; basal 

 abdominal impression (c?) extending onto the second segment. Length 

 3.8 mm.; width 1.9 mm. Brazil (Santarem). One example. 



amazonicus n. sp. 



Thoracic lobe almost obsolete, the thickened edge reflexed and with a broad 

 shallow median sinus; abdomen not impressed basally in the male; vestiture 

 above similarly of very small, sparse and inconspicuous whitish squamules, 

 broader beneath , • • 2 



2 _Body oval, not shining, deep black, the legs, and especially the tibiae, rufous, 

 humeri not so prominent as in the preceding; beak (o") nearly similar, but 

 rather longer than the head and prothorax, the antenna? nearer apical third, 

 the seventh funicular joint alone angulate within, the oval abrupt club as 

 long as the five preceding joints, denticulate at base; prothorax shorter, 

 two-fifths wider than long, the sides feebly converging and slightly, subevenly 

 arcuate nearly to the apex, there a little more rounded; punctures dense 

 but not quite so coarse as in the preceding, the scutellum subsimilar; elytra 

 shorter and more obtuse, the sides less oblique, though similarly arcuate, the 



