84 liJbSCRIPTION OP INSECTS 



Very similar to the preceding species, but, independently 

 of colour, it may be readily distinguished from it by the 

 much wider thorax and the impressed elytral spots. 



3. B. Hevigatum above green, polished, beneath blackish ; 

 elytral strife not impressed, punctured. 



Length rather more than one-fourth of an inch. 



Body all above green, polished, beneath blackish, polished. 



Anteiinae and palpi rufous. 



Thorax impunctured, broadest in the middle, nearly equal 

 to the base of the elytra, contracted behind, posterior an- 

 gles rectangular, basal line nearly rectihnear, marginal 

 groove interrupted at the posterior angles by an oblique 

 acutely carinated line, dorsal line slightly impressed, 

 basal ones profoundly indented. 



Elytra destitute of impressed stripe, punctures rounded, 

 somewhat dilated, obsolete behind the middle, interstitial 

 lines flattened. 



Feet dark rufous ; venter slightly piceous on the disk. 



This species was obtained in Missouri by Mr. Nuttall. 



•1. B. *dorsalis greenish polished, beneath blackish > elytra 

 testaceous, with two obsolete undulated bands. 



Length upwards of one-fifth of an inch. 



Body beneath piceous-black, polished. 



Head green somewhat brassy ; front longitudinally convex 

 in the middle ; antemue brown, testaceous towards the 

 base ; palpi testaceous, darker towards the tip. 



Thorax green slightly tinged with cupreous, marginal groove 

 interrupted at the posterior angles by an oblique carinated 

 line, dorsal line obsolete, basal ones dilated, basal edge 

 oblique each side. 



Elytra whitish-testaceous, strife punctured, profound, not 

 obsolete near the tip, interstitial lines hardly convex, third 

 with a transverse linear impression before and one behind 

 the middle, area of the scutel greenish, two fuscous, ob- 



