TRIBE I. — HARMOSTINI. 271 



across the eyes than apex of pronotum ; tylus longer than 

 cheeks and compressed between them ; beak passing middle 

 coxae, its third and fourth joints subequal; antennae half or 

 more the length of the body, basal joint stout, half the length of 

 the head, second and third slender, fourth stouter and shorter, 

 fusiform ; pronotum broadest across the humeri, narrowed and 

 somewhat declivent toward apex, side margins more or less 

 concave, their edges recurved and with front angles acute, pro- 

 longed forward; scutellum small triangular, the clavi meeting 

 behind its apex; front and middle legs slender, unarmed, hind 

 ones longer, their femora clavate, armed beneath on apical half 

 with three or four strong spines and finer spinules intervening. 

 Three genera are known, all occurring in the United States, 

 two being represented in our territory. 



KEY TO EASTERN GENERA OF HARMOSTINI. 



a. Pronotum without a distinct median impression between two short 

 ridges; abdomen not dilated at middle, the connexivum concealed. 



I. Harmostes. 

 aa. Pronotum with a median impression, limited each side by a short 

 ridge; abdomen dilated at middle, the connexivum broadly ex- 

 posed. II. Aufeius. 



I. Harmostes Burmeister, 1835, 307. 



This genus, with diagnostic characters as set forth under 

 tribal heading and in key, is represented by 16 species, all from 

 the New World. Of these seven occur in America north of Mexi- 

 co, four in the eastern states. 



KEY TO EASTERN SPECIES OF HARMOSTES. 



a. Side margins of pronotum finely toothed or crenulate. 

 b. Second and third joints of antenna? subequal; abdomen dull yellow 

 with fuscous markings; length, 6 — 7 mm. 199. affinis. 



bb. Second joint of antenna? shorter than third; abdomen greenish-yel- 

 low, thickly sprinkled with reddish dots; length, 7 — 8 mm. 



200. SERRATUS. 

 aa. Side margins of pronotum entire. 



c. Basal joints of antenna? reaching or but slightly surpassing apex 



of head; second and third joints subequal. 201. fraterculus. 



cc. Basal joints of antenna? surpassing apex of head about one-half 



their length; second joint shorter than third. 202. reflexulus. 



199 (340). Harmostes affinis Dallas, 1852, 522. 



Elongate-oval, subdepressed above, subconvex beneath. Above gray- 

 ish-yellow, thickly marked with fuscous or reddish-brown punctures ; an- 

 tennae dull yellow, apical joint in part fuscous; apical margin of scu- 



