308 GEO. H. HORN, M. D. 



7.— C. pun flu lata Lee., Ann. Lye. V. p. 151.— Black, thorax red. Varies, 

 with the elytra entirely reddish yellow. 



Male characters as \nfunebris. 



Female as infunebris. 



Occurs in California and Nevada. 



This and the preceding species seem to differ only in the color of the 

 thorax and may possibly be the same. 



8.— C caualicnlata Lee., New Species, p. 143. — Black, thorax red, sur- 

 face feebly shining. Thorax with median impressed line deeper behind. Elytra 

 rather coarsely not densely punctured. Eyes less prominent than the hind angles 

 of the head. I have seen variations of this species in which the color is entirely 

 black, and one of them with pale legs. 



Male.— Elytra bordered at tip with yellow, smoother, not impressed. 



Female as in funebris. 



Collected rather commonly by Mr. Charles Dury, near Cincinnati, 

 Ohio. The males seem to be rare. 



9.— C elegans Hentz, Trans. Am. Philos. Soc. 1830, p. 257.— Piceous, thorax, 

 legs and two basal joints of antennae reddish yellow. Elytra rather coarsely, 

 sparsely punctate. 



Male. — Elytra with an oval bnllate spot at tip which is very smooth, yellow 

 and impressed. Last two segments of abdomen yellow. 



Female. — Elytra nearly equally punctured at tip. Abdomen black. 



Occurs principally in the northwestern regions. My specimens are 

 from Detroit and Dakota. It occurs, however, in the Middle States. 



10.— C termiiialis Say, Journ. Acad. V, p. 257.— Piceous, thorax red,elytra 

 slightly pruinose, the punctures coarse, deep, but not dense. 



Male.— El vtra at tip yellow, smooth, impressed, but not more convex. 

 Female. — Elytra concolorous, a little smoother at tip. 

 Occurs in the Middle States, Ohio and Michigan. 



11.— C. L«ewisi Horn, Trans. Am. Ent. Soc. 1871, p. 281.— Body beneath 

 piceous, color above variable. Elytra moderately densely punctured. 



A large series of specimens shows this species to be very variable and 

 this, too, in characters usually considered of some importance. These 

 varieties are as follows : 



LewisL— Blaek, thorax red. Elytra of male tipped with yellow. 



variabilis. — Black, thorax red. Elytra of male black at tip. 



monticola.— Elytra yellowish, tip % yellow, legs entirely or in part pale. 



In addition to the above-named varieties specimens occur with yellow 

 elytra as in monticola, but with entirely or partly black legs, and again, 

 others entirely black above. 



It might seem as if some of these forms should be considered specifi- 

 cally distinct, as the characters separating them are no less than those 

 used to distinguish other species. While certain characters are used as 



