594 Coleopterological Notices, IV. 



22 Centrums nubecula n. sp. — Oval, rather robust, moderately 

 convex, black and shining throughout, the anterior tibiae rufous and longer 

 than the others ; vestiture white, rather sparse, consisting on the upper sur- 

 face of very slender hair-like squamules, disposed in nearly even approximate 

 lines on the elytra, and becoming coarse and denser scales about the scutellum 

 and in a subsutural area on each just behind the middle; on the pronotum 

 they are coarser and denser near the base before the scutellum and at lateral 

 fourth ; on the under surface they become moderately wide and close, except 

 on the apical half of the prosternum, where they are very fine and sparse but 

 radiating from the peculiar antero-central point mentioned in the other species 

 of this subgenus. Mead prominently convex, finely, sparsely punctate, the 

 beak strongly arcuate in basal third, thence feebly arcuate and very thin 

 viewed laterally, but broad and flattened viewed anteriorly to the apex, 

 punctured at the sides toward base, nearly one-half as long as the body, the 

 antennae inserted well behind the middle, nearly as in capillatus, the first 

 funicular joint as long as the next three, the second a little more than one- 

 half as long as the first and about as long as the next two. Prothorax two- 

 thirds wider than long, the apex truncate, not quite one-half as wide as the 

 base ; sides evenly, feebly arcuate and convergent from the base, the constric- 

 tion broad and feeble ; base transverse and straight, the median lobe small 

 but prominent ; disk rather coarsely, strongly, evenly and closely punctate, 

 without evident impunctate line. Scutellum small, quadrate, impressed 

 Innately behind. Elytra a little wider than the prothorax and not quite 

 twice as long, evenly conoideo elliptical in outline, the humeri basal, moder- 

 ately prominent ; disk not coarsely but very deeply, abruptly striate, the 

 intervals fiat, fully three times as wide as the grooves, rather finely but 

 strongly, not densely and subtransversely punctato-rugulose. Prosternum 

 feebly, transversely and indefinitely impressed anteriorly, separating the 

 coxae by one-half of their own width, without trace of corneous processes. 

 Posterior tibiae slender, strongly sinuate externally at apical fourth. Length 

 3.2 mm. ; width 1.65 mm. 



Texas. 



From analogy in the case of capillatus, if we regard as the female 

 the form having the beak more abruptly bent near the base and 

 more widely flattened, the unique type of nubecula is of that sex, 

 for the beak is even more noticeably flattened than in the species 

 referred to. In the male, the beak is but slightly shorter, and is 

 much more evenly and, on the whole, more strongly arcuate than 

 in the female, and is cylindrical, although feebly flattened very near 

 the apex. For the reasons stated, the male beak appears thicker 

 from a lateral point of view than that of the female, but from an 

 anterior point it is a little thinner. 



23 Centrinus ClientulUS n. sp. — Rather narrowly rhomboid-oval, 

 convex, polished, black throughout, except the legs which are bright rufous ; 



