Zool. [mod.L., f. caliga ‘shoe.’] A genus of pœcilopodous crustacean parasites, family Caligidæ. Hence Caligoid.

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1836.  Penny Cycl., VI. 161/1. Caligus … commonly known among the fishermen as fish-lice.

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1852.  Dana, Crust., II. 1525. Few Caligoids have been reported from the Torrid zone.

3