296 Memoirs on the Coleoptera 



In many respects this might be considered a genus of the Nicentrid 

 series, but the mandibles are quite different. It is, at the same 

 time, apparently wholly out of place among the other genera with 

 which it is here associated. 



Rancea n. gen. 



The body here is elongate-oval, strongly convex, rather pointed 

 behind, with small prothorax and, in great part, glabrous surface. 

 The beak differs very much in the sexes, being very slender in the 

 female and rather abruptly inflated in about basal fifth, while in 

 the male it is much shorter, subeven and with a thickness about 

 equal to that of the basal enlargement of the female; it is not 

 separated from the head by an obvious impression. The antennae 

 are medial in the female, at nearly three-fifths in the male and are 

 slender and rufous, the scape slender, with clavate apex and not 

 quite attaining the base; the first funicular joint is as long as the 

 next two, the second also somewhat elongate, and the club is small, 

 oval and rather abrupt, with its basal segment somewhat over half 

 the mass. The prosternum has an abrupt glabrous canaliculation, 

 broadest apically and narrowing toward the coxae, the latter very 

 narrowly separated, though not quite contiguous; it is not spinose 

 in the male. The legs are normal, the tibiae straight and the 

 claws strongly divergent and very moderate in size. The prothorax 

 is obliquely and feebly tubulate at apex, the basal lobe small, the 

 scutellum parallel, longer than wide, glabrous and deeply longitu- 

 dinally concave, and the elytra are coarsely, very abruptly and 

 deeply grooved, with strong strial punctures. The species are as 

 follows : 



Body suboval, shining, deep black, with rufo-piceous prothorax; pronotum 

 glabrous, with a cluster of white scales at the middle of the base and at each 

 basal angle, the elytra glabrous throughout; coarse sternal punctures bearing 

 each a very small slender squamule, those on the prosternum are also very 

 fine and sparse but denser along the edges of the canal, the abdomen virtually 

 glabrous; beak ( 9) rufous, darker basally, a fourth longer than the head 

 and prothorax, extremely slender — viewed laterally, but somewhat flattened 

 dorsally, almost smooth, with a few squamules at base; prothorax only a 

 fifth or sixth wider than long, the sides subparallel and feebly arcuate, 

 gradually rounding and oblique beyond the middle to the gradual tubulation, 

 which is more than half as wide as the base; punctures small but deep, 

 separated by two or three times their diameters, more minute apically, a 

 little coarser and less separated laterally; elytra triangular, nearly one-half 

 longer than wide, the oblique sides evenly and distinctly arcuate, the apex 

 almost acutely rounded, nearly a third wider than the prothorax and two 

 and one-half times as long; humeri descending rapidly upon the base; 

 grooves strongly punctured along the bottom, as wide as the intervals 

 laterally, but not discally, the intervals with single series of extremely 

 minute nude punctules; abdomen strongly convex, finely, loosely punctate. 

 Length 2.8 mm.; width 1.25 mm. Brazil (Chapada). November. A 

 single female parviclava n. sp. 



