160 DESCRIPTIONS OF AND OBSERYATIONS ON 



twice the length, with transverse confluent punctures : scutel bright 

 green : elytra with transversely confluent punctures ; serrate from near 

 the humerus; surface obsoletely undulated : 6enea/A cupreous : anterior 

 thighs with a prominent acute spine. — Length seven-twentieths of an 

 inch. 



A small and distinct species. 



13. B. impedita.* Elytra bluish-green, grooved and punctured. — 

 Inhab. Pennsylvania. 



Head confluently punctured, green with a cupreous reflection : an- 

 tennx steel-blue, at base green : lahrum green, ciliate at tip : thorax 

 cupreous, with green confluent punctures ; on some parts of the disk 

 the punctures are sparse : scutel oval, regularly concave, green : elytra 

 densely punctured, with five dilated grooves and four elevated lines, 

 the latter sparsely punctured ; green, gradually shaded into a blue vitta 

 along the middle ; suture and outer margin cupreous ; tip somewhat 

 truncated : beneath green cupreous. — Length three-fifths of an inch. 



The specimen was taken near Philadelphia. It is evidently related 

 to salisbiiriensis^ as described by Weber, to decora, F., and splendens, 

 F. of China. But Weber's description states the former to have stri- 

 ated elytra, without elevated lines. The splendens has only three ele- 

 vated lines on the elytra, and the decora is larger, with the tip of the 

 elytra two-toothed. Neither can it be the striata, Oliv., as the elytra 

 are not slightly bidentate, nor are their two inner elevated lines abbre- 

 viated. A variety found by my brother, B. Say, in New Jersey, is 

 much tinted with copper, and is smaller, but the sculpture and form 

 are the same. 



I may add, as closely allied to the impedita and to the salisburiensis, 

 Web., in point of colouring, a specimen which I found in New Jersey 

 many years since, and which I then described under the name of ul- 

 tramarina; but the description was mislaid and never published, and 

 the specimen is now deprived of its head and thorax. The following 

 is a description of what remains of it. 



* Dr Harris is of opinion that this species, the aurulenta of Linnaeus and Olivier, and the 

 striata of Fabricius are the same ; and that the decora, F. and salisburiensis, Weber and 

 Herbst, are identical. The latter differ from the aurulenta, L. in not having elevated lines on 

 the elytra. 



