374 Memoirs on the Coleoptera 



black or blackish in both sexes; under surface with dense pale yellow scales, 

 the median part of the sterna, the abdomen narrowly along the middle, at 

 least basally and throughout the first segment, the mesosternum, outer part 

 of the mes-episterna and posterior half of the inferior thoracic flanks, wholly 

 glabrous; beak thick, cylindric, straight, feebly arcuate distally, sparsely 

 punctured and at the sides moderately longitudinally sculptured and, in both 

 sexes, a little shorter than the prothorax; antennae at three-fifths in both, 

 with longer scape but shorter, thicker, bristling shaft (cf ); prothorax slightly 

 elongate, the feebly converging sides straight, very gradually feebly arcuate 

 and more converging beyond the middle, the feeble tubulation more than 

 half as wide as the base; punctures very small, sparse and inconspicuous; 

 basal lobe defined by a distinct small sinus at each side of its base, as usual 

 in the genus; elytra nearly two-thirds longer than wide, very little wider 

 than the prothorax and three-fourths longer, the feebly oblique sides straight, 

 gradually arcuate behind the middle to the obtusely rounded apex, the humeri 

 feebly tumid; striae extremely fine and feeble, punctulate, distinctly im- 

 pressed at apex, the intervals virtually impunctate; abdomen without sexual 

 impression, glabrous medially throughout its length in the female. Length 

 6.0-7.5 mm.; width 2.25-3.0 mm. Brazil (Chapada). January. Eight 



specimens australis n. sp. 



Femora more or less densely squamulose; under surface densely squamose 



throughout; species often notably small in size 2 



2 — Legs black, the tibiae sometimes obscurely rufous 3 



Legs dark rufous throughout. Guatemala 7 



3 — Form short, stout and oblong-oval, the prothorax somewhat inflated. Peep 

 black and shining; beak thick, compressed, very feebly arcuate and hardly 

 four-fifths as long as the prothorax, more or less longitudinally sculptured; 

 antennae ( 9 ) at scarcely three-fifths, blackish, of the usual structure; pro- 

 thorax barely as long as wide, the sides evenly and distinctly arcuate from 

 base to the feeble tubulation, which is a little more than half as wide as the 

 base; punctures very fine, sparse and inconspicuous; basal lobe with the 

 lateral sinuses rather deep; scutellum angulate behind as usual, transverse 

 and strongly sinuate at base; elytra barely more than a fourth longer than 

 wide, slightly wider than the prothorax and three-fifths longer, with feebly 

 tumid humeri; sides very feebly oblique and straight, very obtusely rounded 

 in about apical third; striae extremely fine and feeble, having minute and 

 distinct punctules, fine but impressed at apex; intervals with very feeble 

 and infinitesimal punctulation; pygidium small, subvertical, fully as long 

 as wide, rounded below, very «feebly convex and rather closely, distinctly 

 squamose; legs unusually short. Length 4.65 mm.; width 1.9 mm. Brazil 



(Santarem). One female specimen subovalis n. sp. 



Form relatively narrower, more elongate-oval, the prothorax not inflated 4 



4 — First ventral segment behind the coxae only about half as long as the second 

 measured on the same longitudinal line; antennae black in both sexes, with 



paler club 5 



First ventral much more than half as long as the second, measured in the same 



way 6 



5 — Male antennae with the first funicular joint as long as the next two, the second 

 a third longer than wide, the others slightly transverse, closely bristling with 

 very stiff setae — almost as long as the articular width — internally, and with 

 almost similar stiff setae, but inclined in direction, externally, the distal 

 joints more oblique, the seventh much shorter than the sixth and transversely 

 cuneiform; club gradual, as long as the four preceding joints, oval, pointed, 

 evenly pubescent and paler, with almost regular sutures internally, the sutures 



