periproct
From ZooTerms (Dictionary of Invertebrate Zoology)
Revision as of 14:28, 10 September 2013 by Andreas Plank (Talk | contribs)
2. (Annelida: Oligochaeta) The pygomere or pygidium.
3. (Arthropoda) see telson.
4. (Echinodermata) The circular membrane containing the anus, surrounded by a varying number of embedded plates.