CUTIS

The true skin is called cutis. It consists of two layers; the dermis and the epidermis.

"Undercote, or undercoat; fester under the skin (coat is "cutis")." from: Letters of Samuel Rutherford

"The cavity of the epimere disappears, and its walls form the muscle and cutis plates of the body."
Source: The Origin of Vertebrates by Walter Holbrook Gaskell

See CABINET OF CURIOSITIES:
3, 6, 9, 10, 23, 24, 25, 30, 33, 34, 36, 38, 42, 43, 47, 48, 52, 53, 54, 55, 56, 57, 61, 63, 65, 71, 72, 75, 78, 82, 85, 86