42 Memoirs on the Coleoptera 



pressions obsolete; elytra a fourth wider than the prothorax and very slightly 

 elongate, triangular, but with the sides posteriorly arcuate to the rather 

 narrowly rounded apex; humeri not quite so broadly rounded, though rela- 

 tively less prominent; stria? fi.ne but distinct, the punctures well separated 

 but larger and more conspicuous than in any preceding species of this section, 

 the sutural stria not modified basally; abdomen and metasternum nearly 

 similar but not so conspicuously setulose; subbasal tibial tooth rather obtuse 

 at tip. The description is drawn from the male as in cavirostris, but the 

 external inferior tooth of the hind femora is rounded at apex in the latter and 

 acute here. Length 8.0-8.3 mm.; width 5.35-5.6 mm. Brazil (Chapada). 

 October. Nine examples punctirostris n. sp. 



Body almost as in punctirostris in form, coloration and lustre, but evidently 

 narrower and a little smaller, and differing principally in having the similarly 

 close punctures of the beak a little coarser, the strong and rather close-set 

 punctures of the head not fine and sparse in a transverse area between the 

 eyes as there, but continuing close-set medially as far as the feeble median 

 impression at the base of the beak; prothorax smaller and narrower, with the 

 lateral elevations almost obsolete or far less distinct, the converging sides 

 from base to tubulation almost evenly arcuate; basal lobe more narrowly 

 truncate and with fewer punctures; surface very even, the excessively 

 minute punctulation barely visible and simple; elytral striae finer and with 

 much finer, subobsolete punctures, the outline nearly similar, the quadrate 

 scutellum a little smaller; outer inferior prominence of the hind femora 

 rounded, not acutely angulate as in punctirostris, the prominent tibial tooth 

 nearly similar; abdomen nearly similar, the basal concave plaque densely 

 punctate, smooth at base. Length 7.5 mm.; width 5.2 mm. Brazil (Cha- 

 pada). October. One male specimen densirostris n. sp. 



Body nearly as in the preceding in coloration and outline, the prothorax smaller 

 and narrower than in punctirostris, obscure rufous; beak in the male two- 

 thirds as long as the prothorax, stout, closely and moderately punctate, but 

 it narrows apically in a peculiar manner; antennae just behind the middle, 

 the lateral channels beyond deep and conspicuous; punctures of the head 

 becoming fine and sparse throughout between the eyes; prothorax slightly 

 wider than long, the lower sides distinct from above, strongly convergent and 

 evenly arcuate, the feeble prominences leaving the entire lower edge visible 

 from above; base confusedly punctate, except at the middle of the lobe; 

 surface alutaceous, the extremely minute sparse punctules placed upon 

 feeble diffuse smoother elevations; scutellum flat, exactly quadrate, minutely 

 punctulate; elytra evidently longer than wide, triangular, with feebly arcuate 

 sides and narrowly rounded tip, a fourth wider than the prothorax, the humeri 

 prominent but rounded; surface very highly polished, the striae, excepting 

 the sutural, excessively fine and obsolete, the punctures fine, feeble and re- 

 mote; distal external inferior projection of the hind femora rather feeble and 

 obtuse in the male, the tibial tooth broad and low; abdominal plaque evenly 

 concave, strongly, closely punctate, smooth at base. Length 7.2-7.5 mm.; 

 width 5.1 mm. Brazil (Chapada — campo). October. Two male speci- 

 mens verrucicollis n. sp. 



Body nearly as in the last but a little larger and stouter, with shorter elytra and 

 more brightly rufous pronotum; beak (cf) almost similar but somewhat 

 longer, also basally thicker; prothorax nearly similar but broader, more 

 sharply trapezoidal when viewed postero-obliquely, the converging sides to 

 the more pronounced tumidities straighter; surface similar but the micro- 

 verrucations are smaller, higher, more sharply defined and sparser; basal 

 lobe similar; scutellum smaller and nearly smooth, quadrate, slightly con- 

 vex; elytra broader, not longer than wide, triangular, with arcuate sides, 



