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Webster 1913 Edition
Littorina
‖
Lit′to-ri′na
,Noun.
[NL. See
Littoral
.] (Zool.)
A genus of small pectinibranch mollusks, having thick spiral shells, abundant between tides on nearly all rocky seacoasts. They feed on seaweeds. The common periwinkle is a well-known example. See
Periwinkle
.