siphonal notch
From ZooTerms (Dictionary of Invertebrate Zoology)
Revision as of 23:35, 13 September 2013 by Andreas Plank (Talk | contribs) (1 revision: import_simple_(-definition))
Mollusca: Gastropoda) A narrow sinus of the apertural margin near the base of the columella functioning for protrusion of the inhalant siphon.
siphonal notch: (