264 Memoirs on the Coleoptera 



scutellum nearly similar; elytra almost similar, but narrower, relatively 

 more elongate and somewhat more than twice as long as the prothorax; 

 grooves as in bifasciatus, but not so obsolete basally in the male as in that 

 species, wholly obliterated however at the extreme base; male abdomen 

 similar; presternum with a very feeble obtuse tubercle before each coxa in 

 the type, the inner fringe of the anterior tibia; not quite so long and more 

 fulvous. Length 4.25 mm.; width 2.18 mm. Brazil (Rio de Janeiro). 

 November. One specimen rubricornis n. sp. 



IV — Elytra with a dense line of slender white squamules for a short distance 

 behind the scutellum on the first interval, but without trace of squamules at 

 the sides of the scutellum; size smaller, rhombic-oval, deep black and 

 polished, smooth and wholly glabrous above, excepting as mentioned, the 

 under surface with small punctures, each bearing a small slender white 

 squamule, wanting on the inferior, finely and sparsely punctured thoracic 

 flanks, except anteriorly and more broadly toward the canal, where they 

 are more silvery; beak (d*) shorter than in the preceding section, fully half 

 as long as the body, strongly arcuate, cylindric and strongly but sparsely 

 punctured, more rapidly tapering distally, the antennae submedial, black, 

 the first funicular joint much shorter, barely as long as the next three, the 

 club thicker, as long as the first two together; prothorax a fourth wider than 

 long, the sides slightly converging and feebly arcuate, rapidly rounding 

 anteriad to the tubulation, which is less than half as wide as the base; surface 

 smooth, very finely punctured at the sides; base punctulate, the groove 

 obsolete, the lobe very short, broad and indistinct; scutellum strongly 

 impressed, obtrapezoidal, nude as usual; elytra a third longer than wide, 

 fully twice as long as the prothorax, the moderately oblique sides feebly 

 arcuate, the apex rather obtusely rounded; grooves very deep and abrupt, 

 attaining the base without the slightest reduction; abdomen (d 71 ) broadly 

 flattened medio-basally, the equally dense small punctures nude; prosternum 

 without vestige of ante-coxal spines, the median canal very deep and abrupt, 

 with the bottom nude and alutaceous; anterior tibiae with the inner fringe 

 shorter than in the preceding section and obsolete basally. Length 3.7-3.85 

 mm.; width 2.0-2.15 mm. Brazil (Santarem). Three male specimens. 



sulcipectus n. sp. 



Elytra with a short line of slender loose squamules behind and at each side of 

 the scutellum; size much larger, deep black, shining, the prothorax rufous, 

 with the tubulation piceous; punctures of the hind body, beneath, each 

 with a minute whitish squamule, these also present near the prosternal 

 canal; the thoracic flanks are glabrous and with very feeble sculpture; 

 beak (o 71 ) rather thick, strongly arcuate, more so basally and very strongly 

 compressed, the flattened sides coarsely and closely punctate near the base, 

 as long as the elytra, or ( 9 ) not quite so arcuate, more slender, much less 

 compressed, minutely punctured, coarsely and closely so near the base and 

 three-fourths as long as the elytra; antennae slender, rufo-piceous, slightly 

 beyond (d 71 ) or behind ( 9 ) the middle, the first funicular joint as long as the 

 next three and as long as the club; prothorax a fourth wider than long, 

 the broadly arcuate sides gradually parallel basally, the tubulation two-fifths 

 (cf) or three-sevenths ( 9 ) as wide as the base; surface smooth; basal 

 margin broadly arcuate medially, with the usual groove; scutellum sub- 

 quadrate, impressed, larger in the female; elytra a third ( 9 ) or three-sevenths 

 (o 71 ) longer than wide, with prominent humeri and feebly, medially arcuate 

 oblique sides and somewhat broadly arcuate apex, more strongly rounded 

 ( 9), twice as long as the prothorax (o 71 ), much less (9); grooves strong 

 and smooth, unchanged basally in either sex; male abdomen distinctly 

 impressed medially at base, the fringe of the anterior tibiae as long as the 



