340 COLEOPTERA OP NORTH AMERICA. 



the legs are short, the thighs not clubbed, the hind tarsi as long 

 as the tibiae, with the 1st joint equal to the two following united. 



Yentral segments nearly equal ; 5th slightly emarginate in both 

 sexes, a little narrower and longer in 9. 



The surface is uniformly finely punctured, and densely clothed 

 with gray pubescence, without elevations or irregularities. 



Tribe IX.— POGONOCHEKIXI. 



This tribe, as here defined, contains species of small size, and 

 usually with long erect (flying) hairs, in addition to the ordinary 

 pubescence. They are related to Acanthoderini, having, like 

 them, the claws divaricate, the body generally rather stout, and 

 the scape of the antennae without cicatrix ; the front quadrate, with 

 coriaceous support to the labrum. They differ in having the 

 scape of the antennae rather shorter and stouter than in the group 

 Liopi, to which they bear the strongest resemblance ; the antennae 

 are only a little longer or shorter than the body, the outer joints 

 gradually shorter; the eyes are moderately or very coarsely 

 granulated (Eupogonius) ; the front coxal cavities are angulated 

 externally, completely closed behind ; the middle ones are angu- 

 lated, but not open externally; the legs are short, thighs strongly 

 clavate in some genera, but not so in Eupogonius and Lypsimena; 

 the middle tibiae have an external sinus in some genera, and are 

 quite simple in others ; the 1st joint of hind tarsi short or only 

 slightly elongated. 



The genera of this tribe are dispersed by Lacordaire among his 

 groups, Estolides, Apodasyides, and Pogonocherides; with the 

 exception of Hoplosia ?, which resembles a Graphisurus, with the 

 antennae of Acanthoderes, the genera have a characteristic 

 habitus. 



Three groups are indicated: — 



Middle tibiae with an external sinus ; thighs clavate ; 



Eyes more finely granulated, lower lobe elongate. Estol<e. 



Eyes less finely granulated, lower lobe not elongate. Pogonocueri. 

 Middle tibiae absolutely simple ; thighs not clavate ; 



Eyes very coarsely granulated. Edpogonii. 



Group I. — Estolae. 



To this group I would refer Pogonocherus nubilus Lee, Proc. 

 Acad. Nat. Sci. Phila., 1862, 39. The eyes are rather finely 

 granulated, the lower lobe elongate ; the scape of the antennae 



