Brazilian Baring 299 



in general appearance, but differing from the former in the sexually 

 subsimilar beak, less approximate anterior coxae, broader and not 

 sharply limited prosternal canal and different form of antennal 

 club, scutellum and some other features, and, from the latter, in 

 the normal fourth tarsal joint, different form of beak — not separated 

 by a distinct sulcus, and several other important characters. The 

 body is narrowly oval, smooth and convex, entirely glabrous above, 

 with some white squamules on the prosternum and a very slender 

 one in each of the sparse and evenly distributed punctures of the 

 remainder of the under surface. Beak moderately thick, feebly 

 arcuate, shining and finely, sparsely punctate, uncompressed and 

 separated from the head by the feeblest kind of impression in both 

 sexes, very little shorter and thicker in the male. Antennae at 

 apical third (o 71 ) or just beyond the middle (9), moderate, the 

 first funicular joint longer than the next two, the second very 

 slightly elongate, the outer joints a little broader, the club stout, 

 oval, as long as the four or five preceding joints and subequally 

 segmented by the sutures. The prosternum has a shallow canal, 

 squamulose and not at all abruptly defined; it is unarmed in the 

 male; the coxae are separated by about a third their width. The 

 legs and tarsi are of the usual type, the prothorax subquadrate and 

 not definitely tubulate at apex, the basal lobe short, very gradual 

 and rounded and the scutellum smooth, somewhat wider than long, 

 feebly impressed and obtrapezoidal ; the elytra are grooved. The 

 type is the following: 



Ranceoma uniformis n. sp. — Oval, in great part glabrous, deep black through- 

 out and polished; beak (cf) about as long as the prothorax, or ( 9 ) as long as 

 the head and prothorax, a little thinner, somewhat more tapering and just visibly 

 more arcuate; prothorax a fifth wider than long, the sides parallel and nearly 

 straight, rapidly rounding in apical fourth, the truncate apex half as wide as the 

 base ( o 71 ), slightly more ( 9 ); punctures moderate but deep and conspicuous, sepa- 

 rated by two to four times their diameters, becoming only a little coarser but 

 scarcely less sparse laterally, and with a smooth median line, not attaining the 

 apex; elytra elongate-elliptic, more than one-half longer than wide, a fifth (a 71 ) 

 or a fourth ( 9 ) wider than the prothorax, and between two and three times as 

 long, the humeri smooth and feebly prominent; grooves abrupt, but only moder- 

 ately deep, not distinctly punctate, only a third as wide as the smooth intervals 

 or less; abdomen with distinct but sparse punctures, the last two sutures arcuate, 

 well reflexed at the sides, the first very feeble, having at base a small feeble im- 

 pression or flattening in the male, which is devoid of punctures. Length 3.0-3.2 

 mm.; width 1. 2-1. 3 mm. Brazil (Chapada — forest). November. Eight speci- 

 mens. 



This and the three preceding genera might be considered analogues 

 of the nearctic Haplostethops. 



