PYGIDIUM
Source: 567
‖Py‐gid″i‐um (?), n.; pl. Pygidia (#). [] (Zoöl.) The caudal plate of trilobites, crustacean, and certain insects. See Illust. of Limulus and Trilobite.
Source: 567
‖Py‐gid″i‐um (?), n.; pl. Pygidia (#). [] (Zoöl.) The caudal plate of trilobites, crustacean, and certain insects. See Illust. of Limulus and Trilobite.