peristome
From ZooTerms (Dictionary of Invertebrate Zoology)
Revision as of 23:41, 13 September 2013 by Andreas Plank (Talk | contribs)
peristome (noun; Greek peri, around; stoma, mouth): 1. The region surrounding the mouth.
2. (Annelida) Segment modified to form part of the head and surround the mouth; buccal segments
See also: prostomium. 3. (Arthropoda: Insecta) Membranous tissue around the base of the mouth. 4. (Bryozoa) Modifications of the area around the orifice. 5. (Echinodermata: Ophiuroidea) Membranous area surrounding the mouth; on the aboral surface of the jaw. 6. (Mollusca: Gastropoda) Thickened rim or lip around the mouth; the margin of the aperture.
