326 COLEOPTERA OF NORTH AMERICA. 



Group II. — Hoplosiae. 



To this group we would refer Fogonucherus nubilus Lee., Proc. 

 Acad. Nat. Sci. Pliila., 1862, ij9. The eyes are rather finely 

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

 stout, clavate, much shorter than the od joint. The lateral spines 

 of the prothorax are large and situated at the middle; there are 

 110 dorsal tubercles. The pubescence is gray mottled with black, 

 and there are short, scattered, erect hairs on the elytra; the 

 antennee are thinly fringed beneath with hairs. The thighs are 

 strongly clavate, and the sinus of the middle tibite is distinct; 

 the 1st joint of the hind tarsi is scarcely longer than the 2d. The 

 5th ventral segment is much larger in 9 , and subtruncate in both 

 sexes. 



This insect indicates a genus, which is perhaps identical with 

 the European Hojylosia. The mesosternuni is parallel and trun- 

 cate Vjehind ; the prosternum in front of the coxse is well developed 

 and not declivous, so that the head is not retractile. 



Group III.— Pogonocheri. 



The eyes are not coarsely granulated", the lower lobe subquad- 

 rate or subtriangular, not elongate ; the scape of the antennae is 

 stout, though less clavate than in the preceding group, and they 

 are fringed with long flying hairs; the prothorax is either armed 

 or not, and has faint dorsal tubercles. The body and legs are 

 clothed with long flying hairs, and tufts of hair are seen on the 

 elytra in Pogonocherus, but in Ecyrus the pubescence is short 

 and close, with a few erect, short hairs proceeding from rows of 

 granules on the elytra, which are carinate on the sides in both 

 genera, sometimes truncate, sometimes rounded at tip. The 5th 

 ventral segment is larger in the 9, and truncate in both sexes. 

 The thighs are clavate, the middle tibiae have a small but dis- 

 tinct tubercle on the outer margin ;* the hind tarsi are short, 

 with the 1st joint equal to the 2d. 



Two genera occur in our fauna. 

 Flyiug hairs long ; prothorax with Lateral spines. Pogonocherus. 



Prothorax with feebly rounded sides, pubescence short. Ecyrus. 



The second genus resembles in appearance a small Mesosa, but 

 differs essentially in the claws being absolutely divaricate, and 

 fixed in position. 



* Lacordaire states that the middle tibiae are simT:ile. 



