Brazilian Barin.e 31 



very sparse slender squamules, transverse, shining, spiculate at the middle 

 behind; elytra with very sparse and slender, hair-like scales, unevenly dis- 

 posed, white or slightly fulvous, in general rather oblique on the carinal 

 slopes of the intervals; under surface with close fulvous hairdike scales on 

 the entire prothorax, densely white at the outer limit of the mesosternum, 

 coarser though linear and uniform, slightly separated and yellowish-white 

 over the entire mes-epimera, the rest of the under surface almost glabrous; 

 abdomen broadly and very feebly concave at base and finely, remotely punc- 

 tate; beak distinctly more than half as long as the body, broadly arcuate 

 distally, carinate above basally, rather closely punctate and feebly squamu- 

 lose basally, nude and finely punctate beyond the antennae which are medial, 

 rufous, with black club: prothorax a fourth wider than long, the sides very 

 feebly converging and slightly arcuate to the middle, there rapidly rounding 

 and more strongly, rectilinearly converging to the subtubulate apex; base 

 deeply bisinuate; carina wide, polished and conspicuous from basal third, 

 becoming finer apically; punctures not evident, the surface with strong 

 oblique and well separated rugulation; elytra scarcely a sixth longer than 

 wide, fully two-fifths wider than the prothorax, the humeri evenly rounded, 

 widely exposed; striae rather feeble, becoming coarse and strongly punctate 

 basally; intervals all strongly carinate, the carinae irregular in width and 

 height longitudinally, obsolete basally. Length (a 71 ) 8.5 mm.; width 5.5 



mm. Brazil (Rio de Janeiro). January. One example carinosa n. sp. 



Body much smaller in size and less sharply rhombic, black, shining; slender 

 fulvous squamules of the pronotum sparse, more irregularly arranged than 

 in the preceding and more condensed on the median line at base, also in a 

 small basal area midway between this and each side; scutellum polished, 

 glabrous and virtually impunctate, more convex, short, transverse, depressed 

 at the middle, the apical projection extremely small; elytra in form and 

 sculpture as in the preceding, the humeri more obliquely exposed at base, 

 scarcely visibly longer than wide, the apex rather obtuse, fully two-fifths 

 wider than the prothorax; vestiture of the same general nature but still 

 sparser and shorter, and, in the type, very inconspicuous; scales beneath 

 smaller, slender, sparser, similarly less so anteriad; abdomen subglabrous 

 and almost impunctate, convex at base and not at all concave at any point; 

 beak nearly similar, the slender antennae rufous; prothorax nearly similar in 

 general form and sculpture but rather smaller and less transverse, somewhat 

 less angulate at the middle of the sides and strongly but more evenly convex 

 above in profile, the highest point more nearly at the middle; anastomosing 

 rugulations more close-set, the carina very obtuse and broad centrally, obso- 

 lete at the apical tubulation. Length ( 9) 5-3 mm.; width 3.4 mm. Brazil 

 (Rio de Janeiro). October. One specimen. . . .• gibbicollis n. sp. 



In gibbicollis the tubulate thoracic apex is not so distinctly less 

 than half the basal width as it is in carinosa. 



Tribe Diorymerini. 



The principal distinguishing characters of this large tribe of 

 purely neotropical Barinse are an exceedingly convex smooth 

 glabrous body, without trace of scaly covering at any point, and 

 at most, and very rarely, a few erect setae, in one remarkable 

 species — Prodinus setulosus — extending sparsely over the entire 

 upper surface. The convexity of the body is so great, that the 



