50 Memoirs on the Coleoptera 



larger than in any of the preceding of this section, almost as long as the pro- 

 thorax, subcylindric, rather thick, only feebly arcuate, very finely, sparsely 

 punctate, more strongly at the sides basally, having, at each side of the upper 

 surface for a short distance beyond the middle, a feeble disconnected longi- 

 tudinal groove; head sparsely punctate; prothorax but little wider than 

 long, the converging sides very moderately arcuate, a little more so near the 

 tubulation; basal lobe with a few coarse punctures, the sinus narrow and 

 deep; scutellum subquadrate, very feebly convex, a little wider than long 

 and with rounded base, not however exactly fitting the adjacent sinus, which 

 is narrower; elytra regularly ovoidal, not longer than wide, a fourth wider 

 than the prothorax, the prominent humeri rounded; sides broadly arcuate; 

 stria? extremely fine, with very small and remote punctures, the three toward 

 the suture coarser, gradually deeper, the two lateral very coarse, especially 

 the exarate ninth; abdominal plaque nearly flat, very finely, remotely 

 punctate; tibiae as usual. Length 5.5 mm.; width 4.0 mm. Colombia. 



One specimen mono n. sp. 



Lateral pronotal edges with stronger and distinct punctures in a narrow area as in 

 curtipennis; beak rather thick, very feebly arcuate, three-fourths as long as 

 the prothorax, flattened and somewhat strongly, closely punctured at the 

 sides basally, elsewhere minutely and sparsely so; head strongly but not 

 densely punctate; prothorax only a fifth or sixth wider than long, the con- 

 verging sides very feebly arcuate, gradually very little more so anteriorly; 

 basal lobe with a few coarser punctures, the sinus rather shallow; scutellum 

 very feebly trapezoidal, arcuate at base, moderate in size; elytra scarcely a 

 fifth wider than the prothorax, slightly longer than wide, ogival, with rounded 

 apex, the prominent humeri not very broadly rounded; striae as in the pre- 

 ceding, except that the discal ones are not so fine and are impressed, the 

 remote punctures distinct; abdominal plaque nearly flat, smooth at base, 

 finely, sparsely punctate thence to the apex, except that at the base of the 

 punctured part — along the distal margin of the smooth base — there is a 

 single line of notably coarse punctures; tibiae as usual. Length 4.4 mm.; 

 width 3.0 mm. Brazil (Chapada). September. One example. 



ebeninus n. sp. 

 36 — Body rhombic-oval in outline; beak ( 9 ) subcylindric and nearly as in the 

 preceding, or (c? ) much shorter, barely three-fifths as long as the prothorax, 

 thicker, more tapering, more feebly arcuate, compressed and coarsely, densely 

 sculptured at the sides, the grooves before the antennae much larger and more 

 conspicuous; prothorax evidently wider than long, the converging sides 

 feebly arcuate, a little more so anteriorly; basal lobe with some coarse punc- 

 tures, the lateral impressions distinct; extreme pronotal sides with the minute 

 punctulation somewhat stronger than medially; scutellum subquadrate, 

 minutely punctulate; elytra not quite as long as wide, parabolic, the humeral 

 prominences rounded as usual; striae extremely fine and minutely punctate, 

 the sutural deep, the second rather fine and shallower, the third nearly like 

 the discal, the ninth not so coarsely exarate as in the few preceding species; 

 abdominal plaque flat, the sparsely punctate surface bordered anteriorly by a 

 transverse line of coarser punctures; tibial tooth low but with the apex 

 finely acute and oblique. Length 4.7-5.5 mm.; width 3.65-4.0 mm. Brazil 

 (Chapada — campo). October and November. Six specimens. 



uniseriatus n. sp. 

 Body smaller and more narrowly rhombic-oval; beak in the female shorter, only 

 about three-fifths as long as the prothorax, subcylindric, only very slightly 

 arcuate, minutely and sparsely punctate and shining, more strongly punctate 

 at the sides basally, the furrows beyond the antennse fine; prothorax but litte 

 wider than long, the strongly converging sides evenly and distinctly arcuatel ; 



