98 SUBFAMILY IX. OTIORHYNCHIXJE. 



large entirely concealing the maxillae; inner wings rudimentary 

 and metanotimi membranous (characters which cannot be seen 

 without breaking up the specimen) ; elytra without prominent 

 shoulders and exposed portion of scutellum very minute. Three 

 of the four tribes recognized by Horn are represented in the 

 Eastern United States. 



KEY TO EASTERN TRIBES OF DIVISION I. 



a. Thorax without either ocular lobes or fringe of hairs (vibrissse) on 

 the front margin of its sides; eyes usually rounded and not partly 

 covered. 



6. Antennal grooves rather long, located on sides of beak and directed 

 very obliquely downwards. Tribe I. BRACHYDERINT, p. 98. 



bb. Antennal grooves short, usually located on upper surface of beak, 

 or if on sides, directed toward the eyes. 



Tribe III. OTIORHYNCHINI, p. 108. 



act. Thorax with ocular lobes or fringe of hairs more or less distinct and 

 sometimes partially covering the eyes. Tribe II. OPHRYASTINI, p. 101. 



At this point the Biologia may be quoted: "There are some 

 species in which it is difficult at first sight to determine whether 

 ocular lobes are present or not; but in such cases the form of the 

 eye will determine the point, it being more or less longitudinal 

 in the greatest diameter when lobes are present, and transverse 

 when they are absent." 



Tribe I. BRACHYDERINI. 



Our members of this tribe have the beak at least as long as 

 head, slightly dilated and notched at tip; front flat; scape of 

 antenna? seldom reaching beyond middle of eye; elytra oval, but 

 little if any wider at base than thorax; front coxae contiguous, 

 middle ones feebly separated ; third joint of tarsi wider than 

 second and deeply bilobed. The tribe is nearly equivalent to the 

 Group Epicaerina of the Biologia, the definition of which is 

 "apterous Otiorhynchiuae without ocular lobes to the thorax, and 

 in which the scrobes are entirely lateral, with their lower border 

 arcuate to a greater or less extent. The scape of the antenna 3 is 

 always moderate in thickness, the corbels of hind tibiae some- 

 what cavernous." 



KEY TO EASTERN GENERA OF BRACHYDERINI. 



a. Antennae scaly, body benoath densely scaly; tarsal joints pubescent, 

 the claws free. I. EPICURUS. 



act. Antennas shining, sparsely hairy; body beneath nearly naked. 



5. Suture separating second ventral from first straight; tips of hind 

 tibi?e open and surrounded by a single row of spinules. 



II. HORMORUS. 



