244 Memoirs on the Coleoptera 



on the elytra, but the ground squamules of the latter are dark red-brown and 

 not so nearly black, the scutellum small, quadrate and subglabrous; beak 

 (o") nearly similar, the antennae medial, piceo-rufous, the scape extending 

 not quite half way to the eye, the club elongate-oval; prothorax almost 

 similar, the punctures rather closer, similarly minute and obsolescent basally ; 

 elytra as in obnixa but slightly narrower, not quite twice as long as the pro- 

 thorax, the pale squamules forming a more compact oblong area behind the 

 scutellum; under surface, legs and prosternal spines nearly similar. Length 

 3.1 mm.; width 1.5 mm. Brazil (Para), — Baker. One male specimen. 



placabilis n. subsp. 

 Body ( 9 ) almost exactly as in Icevicollis ( 9 ), but a little broader, with the some- 

 what larger prothorax similarly coarsely and very deeply but still more 

 closely punctate, the punctures separated by only about a third their widths; 

 slender yellowish squamules loosely aggregated in a short sublateral vitta 

 basally, not obvious in Icevicollis except at extreme base; squamules of the 

 elytra extremely few and remote, more numerous at base and in a small 

 sutural spot at basal third; beak a little longer and less arcuate, in the same 

 way more arcuate basally than apically and four-fifths as long as the elytra, 

 the antennae medial; mandibles straight, the left apparently with a slight 

 nick internally; prothorax nearly similar, almost two-fifths wider than long, 

 the sides less converging from the base and more rounding beyond the 

 middle; scutellum as wide as long, somewhat smaller, smooth and polished; 

 elytra as in Icevicollis, parabolic, more than twice as long as the prothorax; 

 abdomen with the small brownish squamules larger and closer than in that 

 species, but much narrower and less dense than in obnixa. Length 3.5 mm.; 

 width 1.85 mm. Brazil (Chapada — forest). November. One female. 



opica n. sp. 

 6 — Form rhombic-suboval, shining, black, the long slender yellowish squamules 

 remote on the pronotum, somewhat more numerous toward the sides and 

 medially but not in any way in vitta-like form; on the elytra remotely 

 scattered, only slightly less sparse at the scutellum and suturally at basal 

 third; beak (o 71 ) as in Icevicollis (o 71 ) but slightly less arcuate and not quite 

 so long, evidently shorter than the elytra; antennaa medial, rufo-piceous, the 

 scape extending a little more than half way to the eye; prothorax fully a 

 third wider than long, the strongly arcuate sides gradually parallel behind 

 the middle, the apex evidently tubulate, not quite half as wide as the base; 

 punctures strong and rather deep but well separated laterally, gradually 

 feebler and shallower discally and obsolescent basally; scutellum much 

 smaller, as wide as long, smooth, polished and obtriangular; elytra as in 

 Icevicollis but narrower and relatively longer, three-sevenths longer than wide 

 and evidently more than twice as long as the prothorax, the grooves similarly 

 deep; abdomen with rather broad and close-set, brownish*- white scales, not 

 very obviously modified in the male, the prosternal spines much shorter 

 than in Icevicollis, slender, similarly oblique and just half as long as the 

 prothorax in the type. Length 3.35 mm. ; width 1 .7 mm. Brazil (Chapada). 



March. One male example parabilis n. sp. 



7 — Body rhombic-oval, black throughout, the legs not paler; squamules above 

 slender but conspicuous, pale yellowish, rather closely aggregated in a lateral 

 vitta and median more irregular line on the pronotum, and rather dense on 

 the second strial interval in apical, and more than basal, third; also along 

 the fourth medially and on the sixth just before and behind the middle, 

 broad, dense and similar in color throughout the under surface; beak (9) 

 strongly, subevenly arcuate, very slightly tapering, four-fifths as long as 

 the elytra, finely, loosely punctate, slightly squamulose basally and separated 

 from the head by a much shallower reentrant angle than in the Icevicollis 



