232 CUKCTJLIONIDJE. 



[LeConte. 



densely, coarsely punctured; mesosternum protuberant; last ventral seg- 

 ment with a round impression near the tip. Thighs annulated, front and 

 middle pair not toothed; hind pair very obtusely toothed. Length 6 mm. ; 

 .24 inch. 



Georgia and Texas. I perceive no sexual differences in the four speci- 

 mens in my collection. 



14. C. posticatus Boh., Sch. Cure. iv. 406. 



Southern States; the references to Say given by Boheman, and copied in 

 Gemminger and Harold, should be hereafter omitted, as was done in the 

 Melsheimer Catalogue; no description was ever published by Say, and the 

 citation from the Journal of the Academy of Natural Sciences of Philadel- 

 phia is erroneous. This species resembles in appearance C. naso, but differs 

 by the shorter and strongly striate beak, the different position of the antennae; 

 by the coarser punctuation of the prothorax, which is less suddenly narrowed 

 and less constricted in front, and not marked with two discoidal spots of 

 white pubescence; by the elytra having the humeri, and sides more rounded; 

 and finally by all the thighs being strongly though not acutely toothed. 

 The under surface is very coarsely punctured, and the last ventral segment 

 has a broad, rounded impression. The mesosternum is protuberant and per- 

 pendicular in front, as in the species of Division 11, and in the three prece- 

 ding species. In some specimens the elytral interspaces are equally, finely 

 carinate; in others the alternate carintB are obsolete. 



15. O. geminatus jDej. Cat. 322: puncticoUu \ Walsh, Proc. Bost. Soc. 

 Nat. Hist, ix, 1863, 310. 



Maryland, Illinois, Kansas. Related to the next three species, but easily 

 distinguished by the prothorax being densely and uniformly cribrate, not 

 at all plicate; the striae of the elytra are composed of large, quadrate punc- 

 tures, interspaces broad and flat; the third and fifth are slightly elevated be- 

 hind the middle; the seventh is subcarinate near the humeri, which are 

 somewhat obliquely rounded; the pubescence is yellowish, very thin and 

 fine, mottled with grayish bands, with a white spot at the base of the 

 third interspace, and rows of very short bristles. Body beneath coarsely 

 punctured; ventral segments 8-5 more finely, but not very densely punc- 

 tured; fifth not impressed in ^; with a shallow but well defined circular im- 

 pression at the tip in 9 ; in the only specimen of the latter sex in my col- 

 lection, the second ventral segment is also transversely elevated, and de- 

 clivous behind; this, however, may be a deformity. Thighs armed with a 

 large, obtuse tooth. Length 4.2 mm.; .17 inch. 



16. C. infector Boh., Sch. Cure, viii, 2, 49. 



One specimen. New York. Of the same size, form and color, as the 

 preceding, but with the prothorax distinctly carinate, and more coarsely 

 sculptured; the cribrate punctures being confluent, so as to leave longitudi- 

 nal ridges; the quadrate punctures of the elytral striae are more approxi- 

 mate; the interspaces narrower and somewhat convex, and the pubescence 

 more yellow, and not mixed with gray. The under surface is uniformly 

 and coarsely punctured; last ventral segment not impressed. 



