corktree (korktre)

[ cal genus of Corisida; a large genus of aquatic bugs, including a majority of the family. C. interrupt a is a common American species, found in pools from New York to Brazil. IMG:content-1312.png:[blocks in formation] tated; the fore tarsi or palæ are blade-like, beset with bristles on the edge, and ending in a slender claw; and the short flat mouth is directed obliquely backward and downward. corium (kō'ri-um), n.; pl. coria (-a). [L. co rium, a hide, leather. Hence ult. E. coriaceous, cuira , quarry3, q. v.] 1. In an at., the innermost layer of the skin; the cutis vera or true skin, as distinguished from the cuticle or scarfskin; the derma, as distinguished from the epidermis; the enderon, as distinguished from the ecderon. See cut under skin.-2. In entom., the basal portion of the hem i elytrum of a het eropterous insect, distinguished by its horny texture from the terminal portion or membrane. See cut under clavus.