160 Memoirs on the Coleoptera 



squamose; under surface with the squamules smaller, very even and slightly 

 separated, a little larger and dense on the prosternum; first abdominal 

 suture fine, rather strongly arcuate at the middle. Length 2.25 mm.; width 

 1.25 mm. Brazil (Chapada — forest). August. One female example. 



nescius n. sp. 

 Form narrower and more elongate-oval, similar in coloration, the narrowly 

 squamiform vestiture not quite so dense or conspicuous, more narrowly 

 aggregated on the strial intervals, the squamules of the strial punctures 

 finer and more widely isolated; beak (?) as in the preceding, only moder- 

 ately slender and as long as the head and prothorax, or (cf) distinctly thicker, 

 not quite so arcuate and as long as the prothorax; antennae nearly similar; 

 prothorax similar but somewhat shorter, the tubulation half as wide as the 

 base (d 1 ), a little wider (9); basal lobe similar but even a little smaller; 

 scutellum slightly smaller; elytra less obtusely oval and fully a fourth longer 

 than wide; form and relative proportion nearly as in the preceding; abdomen 

 very finely squamulose, without any obvious sexual modification. Length 

 2.0-2.15 mm.; width 1.0-1.15 mm. Brazil (Chapada). May and October. 

 Two specimens seriatellus n. sp. 



The latter may be distinguished easily from nescius, though 

 closely allied, by its smaller size, narrower form and looser vestiture. 



Group II 

 Subgenus Pseudopalocus nov. 



The single known species may be identified by the following 

 characters : 



Body narrowly suboval, a little less regularly oval than in the two preceding, 

 the elytra being more evidently wider than the prothorax, similarly black 

 and closely clothed throughout, but with the squamules of the pronotum 

 more uneven in distribution, being dense in lateral fourth and along a fine 

 median line, elsewhere finer and sparser, the similarly quadrate scutellum 

 much more convex and more nearly glabrous, having only very minute 

 sparse squamules, the elytra with much less regular interstitial squamules, 

 these being in single line on some intervals and doubled on parts of others; 

 beak in the type distinctly and evenly arcuate, rather thick, strongly, densely 

 sculptured and fully as long as the prothorax, the antennae blackish and 

 medial; prothorax of different outline, about a fifth wider than long, the 

 moderately converging sides almost straight nearly to apical fourth, there 

 rapidly rounding to the truncate tubulation, which is almost four-sevenths 

 as wide as the base; punctures strong and dense throughout; basal lobe 

 similar; elytra oval, rather narrowly rounded at apex, a fourth longer than 

 wide and three-fourths longer than the prothorax, the humeri broadly 

 rounded and not evidently prominent; striae rather coarse, moderately deep; 

 intervals varying in width; abdomen finely, closely squamulose, the pro- 

 sternum fiat. Length 2.1 mm.; width 1.1 mm. Brazil (Chapada). March. 

 A single example — probably male inaequalis n. sp. 



It is probable that all these species inhabit flowers in clearings; 

 they do not seem to be at all common, but the genus is without 

 much doubt more widely diffused than might be inferred from the 

 single locality here recorded. 



