488 Memoirs on the Coleoptera 



tarsal claws very slender, widely free and divergent. The type is 

 the following: 



Orthobaridia sulcatula n. sp. — Parallel, with nearly straight sides, glabrous, 

 black, the elytra faintly piceous; beak ( c?) three-fourths as long as the prothorax, 

 finely, closely punctate above and, on the head, more finely and sparsely punctu- 

 late; antennae obscure ferruginous; prothorax quadrate, fully as long as wide, 

 the parallel sides feebly arcuate, rounding and becoming strongly oblique in 

 about apical third, the narrow truncate apex much less than half as wide as the . 

 base, the basal angles rounded; punctures fine but distinct, separated by two or 

 three times their width, a little coarser and longitudinally subrugulose at the 

 sides; median smooth line distinct but not attaining the apex; elytra nearly 

 one-half longer than wide, very slightly wider than the prothorax, the sides 

 parallel and straight, slightly oblique at base, without humeral swelling, gradually 

 rounding apically, the apex narrowly obtuse; striae very coarse and deep, im- 

 pressed, not groove-like and coarsely, closely punctate; intervals barely wider 

 than the striae and convex, with infinitesimal sparse punctulation; male abdomen 

 with a sharply defined subquadrate concavity medially at base. Length 3.6 

 mm.; width 1.4 mm. Brazil (Santarem). One specimen. 



The deep and coarse, impressed elytral sulci and convex intervals, 

 parallel form of the body, thick beak, with subapical antennae and 

 form of the thoracic apex, are characters which will serve readily 

 to identify this aberrant species. 



Dalcesia n. gen. 



In general habitus the body in this genus is notably isolated, and 

 I know of nothing with which it can be compared very closely. 

 It is cylindric, shining and glabrous, the prothorax conspicuously 

 small, parallel and narrowed apically. The beak is moderately 

 thick, feebly arcuate, equal throughout, compressed and separated 

 by a small reentrant angle. Antenna? medial, short, the club 

 oblong-oval, as long as the four preceding joints, coarsely pubescent 

 and subequally divided by the strong sutures. Prosternum very 

 shallowly sulcate, the depression somewhat sharply defined, the 

 coxae narrowly separated and the posterior lobe short and broadly 

 rounded. Prothorax without trace of apical constriction or tubu- 

 lation, broadly arcuate basally except near the sides, but without 

 lobe, the scutellum relatively large, slightly free, flat, subquadrate, 

 angulate behind, densely punctulate and with close narrow squam- 

 ules, whitish in color but not conspicuous, the elytra finely and 

 smoothly grooved. Pygidium small, rather transverse, vertical, 

 its sides oblique and the apex narrowly truncate. The legs are 

 moderate, the tarsi notably slender, with free arcuate claws. The 

 type may be described as follows: 



Dalcesia calvata n. sp. — Form oblong-subcylindric, the elytra only moderately 

 convex, deep black and shining; under surface with fine sparse squamules; beak 



