69 



mous with Dicerca lacustr is l^tc, a species taken at Point Kewenan, on 

 Lake Superior.] 



[157], 210. BUPRESTIS (OdONTOMUS) TRINERVIA Klfby. — Plate ii.. 

 fig. 9. — Length of the body 5^^ — 5^ lines. Several specimens taken in 

 Lat. 54° and 65° and in the Rocky Mountains. 



Body punctured, above black-bronzed, below copper-coloured and 

 glossy. Head obscurely copper, confluently punctured and wrinkled, 

 with a pair of levigated irregular elevations between the eyes; nosebilobed 

 with divaricated lobes forming an obtusangular sinus ; antennae copper 

 with a testaceous oedicel: prothorax transverse, confluently punctured 

 with several levigated spaces ; lightly and widely impressed, impressions 

 faintly gilded ; disk channelled ; sides very slightly emarginate ; base with 

 a doubl.; sinus , scutellum triangular, acuminated : elytra with the de- 

 pressed parts confluently punctured and very faintly gilded ; with three 

 subinterrupted longitudinal ridges connected by transverse levigated ele- 

 vations ; the two external ridges become confluent and proceed as a single 

 ridge to the apex ; lateral margin towards the apex minutely serrulate : 

 back of the abdomen of a fine silky green : underside of the body thinly 

 planted with hoary hairs ; proslernum constricted in the middle and ter- 

 minating towards the anus in a dilated trilobed point : shoulders much 

 incrassated, armed below with a stout tooth ; cubits clubbed at the apex ; 

 four anterior tibiae bent or bowed : hypopygium bidentate. [Belongs 

 to the genus Chrysoboihris Esch. Taken in Canada, and, according to 

 Dr. Le Conte, in the following localities : *' I^ke Superior, Lake Winni- 

 peg, Oregon and Washington Territories.'' He states that " the colour 

 beneath is somewhat variable, and that he has a ^ with the body entirely 

 green, and a $ in which it is coppery, with purple spots at the sides of 

 the abdomen. The sides of the thorax are sometimes straight, sometimes 

 rounded, but it is never obviouslv wider m front.'"] 



211. BuPRESTis (Odoxtoml's) pRoxiMA Kirhy. — Length of body 5j,i- 

 lines. A single specimen taken in the Expedition. 



[158.J Body minutely and thickly punctured : above black-bronzed 

 obscure ; underneath cupreous with the gloss obscured ; except near the 

 anus, cloathed with numerous rather long decumbent hoary hairs. Head 

 somewhat cupreous, hoary from decumbent hairs ; nose green, bilobed 

 with divaricated lobes, including a somewhat obtusangular sinus ; antennae 

 green ; vertex channelled : prothorax embossed in the disk, impressed 

 and wrinkled at the sides; depressed parts punctured and reflecting a 

 f^int lustre pf copper : $Qutellum an isosceles triangle, depressed and green 



