358 



ecutel; elytra obsoletely striated, and with elevated, blackish, abbreviated 

 lines; tips bidentate; not so much elongated as in the divaricata: pectus, 

 {)ostpectus, and first ventral segment canaliculate. In some lights the elytra 

 appear to be tessellated with black and cinereous, which arises from the 

 interstitial lines being interrupted into blackish, glaln-ous, elongated tuber- 

 cles by intermediate patches of confluent punctures. 



Length from .57 to .66, breadth from .20 to .24 inch. 



It is found in the summer months on the trunks and limbs of the Carya 

 ■ porcina, or pig nut tree, in which the larva also resides. 



§ V. Scutellum minute, transiierse ; thorax bisinuat.e behind; bases of tho- 

 rax and elytra subequal ; shoulders prominent. 



B. *fulvo-guttata. Body nearly oval, depressed, black brassy and conflu- 

 ently punctured above, shining brassy, minutely punctured beneath; scu- 

 tellar lobe of the thorax deeply indented, disc obsoletely canaliculate before, 

 and with a small indentation each side of the middle ; each elytron with 

 two basal indentations, a pale fulvous spot on the middle near the suture, 

 another behind the middle near the margin, and a third near the apex, in a 

 line with the first; tip rounded; postpectus in the middle canaliculate. 



Length .29 to .40, breadth .12 to .17 inch. 



I captured the perfect insect on the trunk of the Pinus strobus, white 

 pine, in Avhich the larva had resided. Specimens were presented me by Mr. 

 Leonard, of Dublin, N. H. 



§ VI. Scutellum moderate, triangular; thorax bisinuate behind for the 

 reception of the middle of the elytral buses ; coleoptra broader than thorax ; 

 shoulders obtusely rounded; anterior femora dentate. 



B.femorata. (F.) Above brassy or greenish black, confluently or regu- 

 larly punctured; face plane, with two metallic, impunctured, raised spots 

 between the eyes; thorax canaliculate, and with an obsolete impression each 

 side; elytra with several, impressed, metallic or greenish, confluently puncj 

 tured spaces, betjveen which are some elevated, sub-glabrous, blackish lines; 

 tips rounded, external edge very minutely seri'ated: Beneath brassy, some- 

 times tinged with cupreous, distinctly punctured, not canaliculate except on 

 the middle of the postpectus. Two confluent Impressed spots on the middle, 

 and two larger behind the middle of the elytron are more aj)parent than the 

 others. 



Length .43 to .54, breadth .15 to .19 inch. 



1 have repeatedly taken this insect upon and under the bark of the peach 

 tree; it is most abundant on fallen trunks of the Quercus alba, or white oak 

 in June and July. 



B. characteristica ? (Melsheimer.) Above cupreous black or purplish 

 brown, confluently punctured; face divided by a transverse line between 

 the eyes, the superior portion apparently overlapping the inferior; metallic 



