Avicula n. (Zool.) A genus of marine bivalves, having a pearly interior, allied to the pearl oyster; so called from a supposed resemblance of the typical species to a bird.
... a swallow, a sky-lark; and has a strange hurrying manner in its song. My specimens correspond most minutely to the description of your fen salicaria, shot near Revesby. Mr. Ray has given an excellent characteristic of it when he says, 'Rostrum & pedes in hac avicula multo majores sunt quam pro corporis ratione.' ... — The Natural History of Selborne • Gilbert White
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