Brazilian Baring 309 



at apex, with short and gradual, broadly rounded basal lobe, the 

 scutellum minute, subtumid but not prominent, very free, its fiat 

 upper surface a little longer than wide, the elytra moderately 

 striate. The type is as follows: 



Microtorcus tubulatus n. sp. — Narrow, parallel, convex, deep black throughout, 

 the surface alutaceous and feebly micro-reticulate, glabrous, excepting single 

 interstitial series of small and slender, whitish squamules and others, small and 

 sparse, beneath; beak (cf) distinctly but loosely sculptured, three-fourths as 

 long as the prothorax, equal in diameter throughout and feebly, evenly arcuate; 

 prothorax very nearly as long as wide, the sides parallel and straight, abruptly 

 rounding at apical fourth to the tubulation, which is truncate and two-thirds as 

 wide as the base; punctures coarse, deep and rather close-set, gradually smaller 

 and separated by twice their diameters medially, with a well defined entire 

 smooth median line; elytra a little less than one-half longer than wide, not wider 

 than the prothorax and about three-fourths longer, parallel, gradually, evenly 

 rounding in posterior two-fifths; humeri feebly tumid; striae rather fine but 

 deep, with fine punctures along the bottom; intervals three times as wide as 

 the stria?, each with a single series of small but deep and distinct punctures; 

 male abdomen almost impunctate, except at the sides, having along the middle 

 basally a deep and simple impression. Length 2.0 mm.; width 0.65 mm. Brazil 

 (Santarem). One specimen. 



The sharply marked thoracic tubulation distinguishes this species 

 readily from its neighbors. 



Torcobius n. gen. 



Another small, cylindric and still more strongly sculptured and 

 squamose species forms the unique type of this genus, so far as 

 known, but it is very different from the preceding in all its structural 

 characters. The beak is feebly arcuate, cylindric and not separated 

 from the head by vestige of impression, the eyes more approximate 

 than the rostral width and with an elongate impression between 

 them. The antennae are submedial, with rapidly descending 

 scrobes, slender funicle, with its first joint about as long as the 

 next two, the outer joints not dilated, the narrow elongate-oval 

 club rather small, about as long as the four preceding joints and 

 apparently subequally divided by the sutures. The prosternum is 

 broadly, concavely canalate, the coxae somewhat large and very 

 moderately separated, and the legs are rather long and slender, 

 normal in structure. Prothorax not at all tubulate at apex, the 

 basal lobe very small and feeble, the scutellum small, glabrous, 

 subquadrate and deeply impressed and the elytra rather coarsely 

 and deeply striate, but not abruptly grooved. The type is the 

 following: 



Torcobius sculptilis n. sp. — Strongly convex, parallel and cylindric, deep black 

 and closely sculptured, the legs bright rufous; beak ( 9 ) three-fourths as long as 

 the prothorax, the sides with a moderate longitudinal furrow; antennae piceo- 



