AMERICAN COT^KOrTERA. 279 



Apical spot not more convex; last two segments black; head ami 



thorax distinctly punctulate; antennse entirely black funebris. 



Apex of elytra of % impressed but without yellow spot; two basal joints 



of antenna; pale; abdomen black lugubris. 



Femora black, tibire pnle. Elytra blue cyanipennis. 



Legs entirely pale fulvipes. 



Thorax black at middle, sides rufous. 



Legs black labiata. 



Legs i)ale pulchra. 



Thorax entirely rufous. 

 Legs black. 



Ai)ex of elytra 'J, with yellow space. 



Apex of elytra % impressed Lewisii. 



Apex of elytra % not impressed. 



Yellow spot not more convex punctulata. 



Yellow spot more convex and shining terminalis. 



Apex of elytra 'J, without yellow spot, but impressed collaris. 



Legs pale yellow. 



Thorax smooth sliining eleg'ans. 



Thorax sub-opaijue with distinct median line canaliculata. 



C. vitatta, n. sp. — Piceous black, feebly shining. Head coarsely and rather 

 densely punctured. Thorax orbicular, slightly narrower behind, finely punc- 

 tured, and sparsely clothed with yellow pubescence. Elj'tra black, scabrous, 

 with an oblique testaceous vitta extending from the humerus to apex and 

 broader at base and the apical two-thirds of the margin also pale; surface 

 sparsely clothed with yellow pubescence. Body beneath black, under side of 

 thorax brownish, rather coarsely but not densely punctured. Legs black, 

 bases of femora pale testaceous. Length .30 inch; 7.5 mm. 



A single male speciiueu in uiy cabinet presents no special sexual 

 character at the apex of the elytra. The antennae are however strongly 

 sub-serrate and the sixth abdominal segment distinctly visible. The 

 sj)eciis is abundantly distinct from any known to us by the characters 

 given in the table, and those above noted. 



For my unique I am indebted to Mr. Jas. Behrens, of San Frau- 

 ci.sco, California, by whom it was obtained in Amador Valley in that 

 State. 



C. Newmani, Lee. Proc. Acad. 1855, p. 274"; Ivgubris WNm, Ent. Mag. V. p. 

 .375 ; Lee. Journ. Acad. Ser. II, Vol. I. p. 83. — Black, shining. Head and thorax 

 very sparsely punctured and finely clothed with short sub-erect pubescence very 

 Bj)arsely placed. Elytra coarsely and rather densely punctured. Beneath black, 

 shining, sparsely punctured and clothed with paler hairs. Legs entirely black. 

 Male. — Antennse very feebly sub-serrate, first and second joints pale. Tips 

 of elytra with yellow spot, smoother and more convex than the rest of the ely- 

 tra and with a distinct impression. Last two abdominal segments pale 

 yellow. 



Female. — Apices of elytra not differing from the remainder of the ujjper sur- 

 face. Abdomen entirely black. Length .28 — .30 inch ; 7— 7. .5 nun. 



Occurs in Maine and Canada. 



