Key:  Family Velutinidae

Phylum Mollusca
  Class Gastropoda
    Subclass Prosobranchia
      Order Mesogastropoda
        Suborder Taenioglossa

Taken primarily from  Kozloff, 1987, 1996 pp.  217, 497 (Copyright 1987, 1996, University of Washington Press.  Used in this web page by permission of University of Washington Press)
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1a  Aperture oval, considerably higher than wide; periostracum generally with small ridges that diverge as they approach the edge of the aperture (associated with the solitary ascidians Styela gibsii, Pyura haustor, and Chelysoma productum) (Velutina plicatilis in key) Velutina velutina
1b Aperture about as wide as high; periostracum without spiral ridges Velutina prolongata

Taxonomic Levels Represented in This Key:

  Velutina prolongata

Page created by Dave Cowles, 2010
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