BY REV. T. BLACKBURN. 655 



II. Ely tral verrucse much less dis- 

 tinct, confused (especially 

 in front) with interstitial 

 rugulosity. 

 J. Puncturation of prothorax 

 close and asperate; form 



strongly convex mixta, Blackb. 



JJ. Puncturation of prothorax 

 not close and asperate ; 

 form much less convex. 

 K. Postbasal impression of 



elytra almost wanting ... sordida, Blackb. 

 KK. Postbasal impression of 



elytra well defined foveata, Blackb. 



GGr. Median verruca; of prothorax 



tuberculif orm verrucicoUi-s, Chp. 



EE. Upper surface (including verruca;, 



which are very large) red or brown. 



F. Prothorax not much narrowed in 



front, widest at the middle montuosa, Blackb. 



EF. Prothorax much narrowed in front, 



widest considerably behind middle rosea, Blackb. 

 DD. Puncturation of elytra decidedly fine. 

 E, Prothorax not mu'ch narrowed in front, 



widest at middle exsul, Blackb. 



EE. Prothorax much narrowed in front, 

 widest considerably behind middle. 



F. Size moderate (Long. 3| 1.) simulans, Blackb. ' 



FF. Size very small (Long. 2^ 1.) abjecta, Blackb. 



CC. Elytra with well defined continuous costa; ferrugata, Chp. 

 BB. Sides of prothorax not at all explanate. 

 C. Elytra not having a well defined transverse 

 wheal-like ridge. 

 D. Form nearly circular: elytra wider than 



long mediocris, Blackb. 



DD. Form less wide; elytra not wider than 

 long. 

 E. Prothorax with somewhat evenly 

 rounded sides; onh- moderately nar- 

 rower in front than at base. 

 F. Puncturation of elytra not particu- 

 larlj' fine and close. 



