epidermis
From ZooTerms (Dictionary of Invertebrate Zoology)
epidermis (noun; Greek epi, upon; derma, skin): 1. The cellular layer of the body wall that secretes the cuticle; the hypodermis.
2. (Bryozoa) Secretes cuticle and calcium carbonate of the skeleton.
3. (Mollusca) The periostracum.
