INHABITING NORTH AMERICA. 89 



13. B. *variegafum black ; head and tliorax tin2;cd witli 

 greenish ; elytra varied witli testaceous^; feet pale piccous. 



Length one-fifth of an incii. 



Budt/ impunctured, glabrous, beneatli black. 



Head black slightly bronzed; antenna- and palpi fuscous, base 



piceous. 

 Thorax blackish slightly bronzed, tinged each side with green, 

 broadest in the middle, a little contracted behind, lateral 

 edge a little excurved near the base, posterior angles rec- 

 tangular, dorsal and basal lines distinct, an elevated acute 

 line at the posterior angles. 

 Elytra black variegated with testaceous, or testaceous varied 

 with black dots and lines, and with a slight cupreous 

 tinge, stritv punctured, profound, interstitial lines convex, 

 third one with two distant punctures. 

 Feet fuliginous. 



Very closely allied to B. dorsalis, wliich may be a mere 

 variety of this insect. This species is sul)Jcct to great va- 

 riety in its elytral markings, the chief colour of the elytra 

 being sometimes black and sometimes pale testaceous, witii 

 a greater or less number of lines and spots. 



14. B. *tetracolum greenish-black ; feet rufous ; elytra each 

 with two rufous spots. 



Length nearly one-fourth of an inch. 



Head deep greenish ; antenmc fuscous ; base and palpi ru- 

 fous. 



Thorax broadest before the middle, contracted behind, la- 

 teral edge excurved at base, base punctured. 



Elijfra blackish, stiia* punctured, interstitial lines convex, 

 third one with two distant punctures, a longitudinal, sub- 

 marginal, rufous spot originating on the humerus, and an 

 oblique, almost common, elongated one behind the middle. 



Feet rufous. 



VOL. II. M 



