357 



inch in length, and has the elytra covered with whitish hairs except where 

 they are crossed by two transverse, broad, glabrous, black bands. The 

 other species is rather smaller, the head and thorax cupreous, or brassy, the 

 elytra black Avith a sanguineous spot near the apex. — The name of this 

 species I have not been able to determine. 



Note. For the sake of exactness and brevity the dimensions of insects 

 will be expressed, decimally, in hundredths of an inch. 



GENUS BUPRESTIS. 



§1. Scutellum none; thorax transversely truncated behind; body subcorn- 

 eal; head nutani. 



B. *Geranii. Body black, brassy, hairy ; each elytron Avith eight, small 

 subequal yellow spots in a double series, the two posterior spots sometimes 

 coalescing into a single oblique one. 



Length .25, breadth .08 inch. 



In the perfect state found only on the blossoms of Geranium maculatum, 

 in the stalks or roots of which I suppose the larvte to reside. 



§11. Scutellum distinct but minute and suborbicular ; body oblong-ovate, 

 depressed ; elytra not produced at tips. 



B. Virginiensis. (Herbst.) Body black, brassy, or cupreous, beneath 

 punctured hairy, above rugose ; head sulcated ; thorax with three elevated 

 lines and two tubercles, on each side, glabrous black ; elytra with the 

 sutui'e, a submarginal and subsutural elevated line, and four intei-mediate 

 abbreviated lines black, glabrous ; external edge near the apex serrate. 



Length from .81 to .87 inch ; breadth from .29 to .31 inch. 



This is probably our largest species. The larva inhabits the trunks of 

 the Pinus rigida or pitch pine, and perhaps other trees. The perfect insect 

 may be found on the trunks of these ti-ees in May and June. It varies in 

 being either cupreous, brassy, or black with hardly any metallic reflections. 



§ III. Scutellum very small, subtransverse ; body long subovate-triangular ; 

 elytra produced at tips. 



B. divaricata. (Say.) Cupreous, coufluently punctured, thorax canalicu- 

 late, indented before the scutel; elytra striated, and with elevated blackish, 

 abbreviated lines, tips attenuated, divergent, truncate: pectus, postpectus, 

 and first ventral segment canaliculate. Intermediate tibiie of the male 

 toothed beneath the middle. 



Length from .69 to .88, breadth from .24 to .30 inch. 



The larva is exceedingly injurious to the Prunus virginiensis, or wild 

 cherry tree, and sometimes attacks the peach tree. The perfect insect may 

 be found on the limbs of these trees in June, July, and August. 



B. obscura? (F.) Obscure brassy above, shining cupreous beneath; 

 confluently punctured ; thorax obsoletely canaliculate, indented before the 



