CORYMBITES. 43 



7? U. Thorax dull, with a shallow central furrow. 



Blackish, with bronze reliection ; legs sometimes lighter ; 

 pubescence irregular, silky, gTay. Sides of thorax very 

 slightly rounded ; elytra broader than thorax, interstices 

 moderately arched. L. 5| — 6| 1. Not common. 



C. impressus, Fab. 



II. P^lytra black, with a round red spot on shoulder, 

 or sometimes entirely red-yellow. 



Head and thorax black ; legs lighter. Sides of thorax 

 rounded, punctuation diffuse. L, 3 — 3| 1. Not common. 



C. bipustulatus, Lin. 



Ludius, 



Broad. Black ; thorax (except base), and elytra yellow- 

 red, former sometimes entirely black ; pubescence rather 

 close, yellow. L. 7 — 8 1. Very rare. L. ferrugineus, Lin. 



A(/riotes, 



A, Second joint of antennae much shorter than fourth. 



Elongate. Brown; pubescence closelying, gray. Thorax 

 closely and strongly punctured ; witli a central furrow 

 behind, posterior angles ridged ; elytra as broad as thorax, 

 slightly dilated in middle. L. 6—7 1. (? Brit.) 



A. pilosics, Panz. 

 S. Second joint of antennae as long, or nearly as long as 



fourth. 



a. Posterior coxae only slightly dilated on inner part, 

 their inner third part less than twice as broad as their 

 outer third part. 



I, Posterior angles of thorax distinctly ridged. 



1, Elytra light brown, with a dark shade on disc; 

 length 21—3 lines. 



Oblong. Head and thorax black, base and apex of latter 

 yellowish-brown. Pubescence rather thick, gray. Thorax 

 longer than broad, rather closely punctured, with an indis- 

 tinct central furrow at l^ase, sides nearly straight, posterior 

 angles directed backward ; elytra long. Common. 



A. sputator, Lin. 



2, Elytra yellowish, alternate interstices brown ; 

 length 4 lines. 



