288 Memoirs on the Coleoptera 



Body narrowly suboval, with small and subcylindric prothorax, testaceous in color 

 throughout, the squamules above conspicuous and very close, though not 

 dense as they are beneath; they are yellowish-white in color; beak evenly 

 subcylindric. feebly arcuate, moderately sculptured and squamulose and 

 somewhat longer than the head and prothorax, the latter almost longer than 

 wide, the parallel sides straight, gradually rounding and moderately converg- 

 ing beyond the middle, the punctures moderate and very close-set; basal 

 lobe small but somewhat rapidly formed; scutellum small, densely albido- 

 squamose; elytra evenly elliptic, three-sevenths longer than wide, a third 

 wider than the prothorax and much more than twice as long, the humeri 

 descending very obliquely to the base; grooves rather coarse and deep; 

 intervals about twice as wide as the grooves, the confused punctures moderate 

 and well separated; male abdomen with the basal impression large, broadly 

 oval, shallow, much more sparsely and finely squamulose than the rest of 

 the surface, the impression having along the sides some rather long erect 

 hairs. Length 1.6 mm.; width 0.55 mm. Brazil (Chapada). June. A 

 single specimen angusticollis n. sp. 



Body broader, similar in color and general nature of the whitish vestiture, which 

 is however denser, still denser beneath; beak (cf) not quite so slender and 

 relatively shorter, only a little longer than the prothorax, feebly arcuate 

 and closely squamulose, the antennae somewhat more apical and at fully 

 three-fifths; prothorax much less narrow, evidently shorter than wide, the 

 lateral outline and dense punctuation almost similar, the squamules a little 

 broader, denser and more conspicuous; elytra much broader, evenly elliptic, 

 scarcely a third longer than wide, a fourth wider than the prothorax and 

 only a little more than twice as long, the oblique basal sides of the humeri 

 shorter; grooves finer, the intervals nearly three times as wide, with the 

 confused punctures as in the preceding but closer; male abdomen with its 

 large and broadly oval, shallow and subglabrous basal impression almost as 

 in angusticollis. Length 1.7 mm.; width 0.7 mm. Brazil (Chapada). On 

 flowers in clearings. October. One specimen ochracea n. sp. 



The female in Nicentrus and all allied genera seems to be much 

 rarer than the male. 



Camerones n. gen. 



This genus is proposed for a species with very exceptional thoracic 

 sculpture, the ground between the fine and very sparse punctures, 

 each of which bears a long stiff pale subsquamiform seta, being 

 densely opaque. This opacity, with high magnification, is observed 

 to be due to extremely minute, close, deep and well defined punc- 

 tures, and they are also present in very slightly less minute form 

 throughout the elytra, except along the polished bottom of the 

 grooves, but, on the elytra, they are separated by half their diam- 

 eters, while on the pronotum they are virtually in mutual contact, 

 though not distorted; it follows that the lustre of the elytra is less 

 densely opaque, being in fact strongly alutaceous. Throughout 

 the under surface, these minute punctures are closer than on the 

 elytra, with shining interstices. The beak is thick and rather short, 

 opaque, the opacity caused by minute parallel strigilation apically, 

 but becoming granuliform rugosity more basally, the antennae sub- 



