Coleopterological Notices, IV. 597 



wider and about three-fourths longer than the prothorax, coarsely, 

 deeply striate, the intervals very coarsely, confusedly punctate. 

 Prosternum scarcely impressed, but with a large transverse abrupt 

 and very deep excavation just behind the apex, the coxae separated 

 by scarcely one-third of their own width. Length 3.2-4.5 mm.; 

 width 1.7-2.3 mm. 



The description above given is taken from the male and in this 

 sex the pygidium is considerably exposed between the ely tral apices, 

 ♦and very oblique ; in the female it appears to be somewhat less ex- 

 posed. The body is more broadly rhomboidal than in the salebrosus 

 group, and the sexual differences in the structure of the beak are 

 not at all evident. The male is black, but the female is almost in- 

 variably more or less rufescent and has the prothorax shorter, the 

 pronotal punctures larger and sparser, and the antennal club simple. 



This species is represented in my cabinet from New York, Indiana, 

 Missouri and Florida ; it also occurs in Brazil. 



26 CentrinilS denticornis n. sp. — Robust, oblong-subrhomboidal, 

 convex, moderately shining, black throughout, the vestiture of the pronotum 

 consisting of very small sparse and slender squamules, evenly distributed but 

 denser toward the sides behind the apical margin, also along the base near 

 the sides and on the median lobe ; on the elytra the scales are generally 

 small, moderately wide, evenly and sparsely distributed over the intervals, 

 each lying entirely within a very deep rounded puncture ; scales of the under 

 surface large, broad and very dense, the color whitish throughout. Head 

 dull and alutaceous, finely but strongly punctured, the transverse impression 

 feeble, the beak abruptly highly polished, in the male rather stout, flattened 

 toward apex, as long as the head and prothorax, deeply, coarsely punctato- 

 rugulose at the sides, the median impunctate line entire, the antennae inserted 

 near apical third, the scape bent and clavate toward apex, the second funicular 

 joint twice as long as wide, three-fourths as long as the first and one-half 

 longer than the third, the club rather large, oval, densely pubescent, as long 

 as the five preceding joints combined, the sutures fine but straight and dis- 

 tinct, the basal joint one-third of the whole, much wider than long, with a 

 large glabrous polished area on the inner side, not extending beyond apical 

 fourth of its length, which is more or less obtusely dentate. Prothorax large 

 convex, the sides broadly rounded, strongly convergent anteriorly, becoming 

 almost parallel in basal half, not constricted near the apex, the latter scarcely 

 two-fifths as wide as the base, which is transverse and straight, with the lobe 

 abrupt, prominent, and the basal angles obtusely rounded ; disk with an 

 evanescent partial impunctate line, the punctures not very large but deep, 

 circular, almost in mutual contact but not polygonal. Scutellum subtrans- 

 verse, densely squamose. Elytra distinctly wider than the prothorax but not 

 much more than two- thirds longer than the latter, the humeri large, promi- 



