aRAMMOPTERA. 315 



yellow ; pubescence pale yellow. Common. 



G. ruficornis, Fab. 



h. Femora and tibiae entirely reddish-yellow. 



Black ; antennae brownish, first two joints lighter ; 

 pubescence bright yellow, scanty on head, thorax and apex 

 of elytra. L. 3| — 4 1. Not uncommon. 



G. praeusta, Fab. 



Gracilia. 



Lighter or darker brown, dull ; antennae and legs reddish. 

 L. 2 — 2^ 1. Common. G. pyginaea. Fab. 



Ohrium* 



Eeddish-yellow-brown ; antennae and legs blackish, 

 pubescent. L. 3 — 4 1. Not common. 



0. cantharinum, Lin. 



Clytus. 



A, Posterior femora gradually thickened toward apex. 



a. Thorax much broader than long. 



Black, velvety ; thorax with a yellow band at apex and 

 another interrupted one in middle; scutellum yellow; 

 elytra with two spots at base of each, three curved bands 

 on disc and an oblique line at sutural angle yellow. L. 5 

 — 7 1. Moderately common. C. arcuatus, Lin. 



b. Thorax about as long as broad. 



Black, velvety ; part of antennae and legs reddish ; 

 thorax with Ixise and apex, elytra with a transverse spot 

 near shoulder, an oblique band (curved toward base) just 

 before middle, another (nearly straight) behind middle and 

 the apex yellow ; scutellum yellow. L. 4| — 6 1. Common. 



G. arietis, Lin. 



a. Posterior femora thin at base, strongly clubbed at 

 apex. 



Black ; elytra generally red-brown at base, the apex and 

 three curved lines in middle covered with whitish-gray 

 pubescence. Thorax about as long as broad. L. 4-^ — 6 1. 

 Kather common. C. mysticus, Lin. 



