Vertigo andrusiana (Pilsbry 1899) Pacific Vertigo

Vertiginidae, ,Gastropoda, Mollusca, Animalia

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Identification:

Description: Shell 1.8 to 2.5 mm tall; 4.5 to 5.5 whorls; behind lip on outer surface has wide, shallow constriction between lip and crest; umbilicus is closed.

Natural History:

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Synonyms:

Etymology: vertigo – whirling; probably named for Andrus