AMERICAN PHILOSOPHICAL SOCIKTY. 429 



7. C OBSCURA. — IJlack, each elytron with twu white luarj^iiial 

 spots and a tenuinal hinulo. 



C ub>icur<(, uij^ra, elytris punctis iluobus inargiiialibiLs, lunula- 

 que apicis alba. Fabr. Syst. Eleut. 1, p. 238. 



Inhabits North Aiueriva. 



JJcsr. Head black, nake<l ; autcinue ])rowii at tip; clypcus 

 large ; labruui white, three-toothed, not eraarginate, at the ante- 

 rior angles, margin with about six puncturew, of which one is 

 placed each fide of the larger central tooth; mandibles white 

 on the exterior ba.se above ; palpi piceou.s. Trunk, )>lack, imma- 

 culate ; elytra tinged with brown on the posterior half, punctures 

 minute, not deeply impressed, two white marginal maculae, of 

 which the anterior one is smaller, rounded, and placed near tbe 

 humerus, the other large, triangular, situate in the middle of the 

 margin, lunule terminal; tarsi piceous. Abdomen, black, naked, 

 immaculate. 



Var. a. Labrum black or piceous, anterior marginal spot of the 

 elytra wanting. 



Very distinct from any other species with whic.li I am ao- 

 •jiiainted, for the variety I am indebted to Mr. J. (iilliams, who 

 caught it in the State of Maryland. 



[Not the C. obscura Fabr., which is the European C. gcr- 

 manira; it is a black race of C. rugifrona Dej., and was described 

 as C. mod('daV>i.]. — l^Ec] [419] 



8. C. PURPUREA. — Head, impre.^'.sed lines of the thorax anil 

 margin of the elytra greeu, the latter with a central, reelivate, 

 oblique, abbreviated band, terminal line and intermediate dot 

 white. 



6'. puryjur^rr, purpurine en-de»HUK, dun vert bleufitrc cn-des- 

 soua; elytres avec une band courte, et deux points blancs. Oli- 

 vier, Ins. 33, t. 3, fig. 34. 



O. marrjinalis f thorace elytrisqne cupreis ; marginibus viridi- 

 bus, elytris lunulis duabus albis, Fabr. Hyst. Kleut. 1, p. 240. 



liCngth of the male about thrce-fiflhs of iin inch. 



Inhabits North America. 



Denf. Head red-cupreous, hairy with green edges, and two 

 distinct green lines between the eyes, originating at the base of 

 the antennae, and approximating towarda the vertex ; antennK 

 1818.] 



