(500 Coleopterological Notices, IV. 



Arkansas (Little Rock). Mr. Wickham. 



This species belongs near salebrosus, but differs in its more obese 

 form, finer and still denser pronotal punctuation, shorter second 

 joint of the funicle and very much more robust club. A single male. 



29 Centrinus pulverulent us n. sp.— Oval, subrhomboidal, convex, 

 black, the antennal funicle gradually rufous toward apex, the club black ; 

 vestiture white, that of the upper surface consisting of small evenly and 

 sparsely placed truncate scales on the pronotum, generally larger and closer 

 along the apical margin ; on the elytra the scales are larger, rather sparsely 

 but evenly distributed, elongate-oval and each lying completely within a large 

 oval puncture, the sqnamules borne by the punctures at the bottom of the 

 strise rather broad, scale-like and distinct ; scales of the under surface large, 

 nearly as wide as long and extremely dense. Bead finely, deeply, not very 

 sparsely punctate, the usual small frontal fovea distinct; beak rather slender, 

 almost straight but abruptly and strongly arcuate at base, nearly as long as 

 the elytra in the female, and smooth polished, very minutely, sparsely punc- 

 tate, but rather abruptly, coarsely and closely so at the sides near the base, 

 the antennae inserted at or just beyond the middle, the first funicular joint 

 not as long as the next three, the second about two-thirds as long as the first 

 and not quite as long as the next two, club well developed, robust, densely 

 pubescent, with the basal joint not longer than the second and constituting 

 less than one-third of the mass. Prothorax one-half wider than long, the sides 

 convergent and broadly, nearly evenly arcuate from base to apex, the constric- 

 tion extremely feeble ; base, basal lobe and scutellum as in salebrosus; disk 

 with an ill-defined fusiform impunctate spot in the middle, the punctures rather 

 large, deep, dense but scarcely polygonal. Elytra distinctly wider than the 

 prothorax and about twice as long, the sides strongly convergent, the apex 

 rather abruptly rounded and about one-half as wide as the basal regions, the 

 humeri prominent ; disk coarsely striate, the intervals flat, coarsely punctate, 

 the punctures elongate-oval, nearly in mutual contact. Presternum broadly, 

 feebly impressed, with an abrupt and extremely deep, transversely oval pit, 

 just behind the apical margin, the coxae separated by about one-half of their 

 own width. Length 4.5-5.0 mm. ; width 2.2-2.4 mm. 



North Carolina ; Texas (Austin) ; Colorado. 



Described from the female. In the male the beak is deeply, 

 coarsely, longitudinally punctato-rugulose, with the antennae in- 

 serted far beyond the middle, the prosternum more deeply impressed 

 along the middle, and the anterior coxae still more narrowly sepa- 

 rated, but the very deep transverse subapical pit is almost similar 

 to that of the female. In antennal structure the male differs from 

 the female in having the second funicular joint shorter, the outer 

 joints more transverse and obliquely truncate at apex, and the 



