‖Ler‐næ″a (lẽr‐nē″ȧ), n. [NL., fr. L. Lernaeus Lernæan, fr. Lerna, Gr. Λέρνη, a forest and marsh near Argos, the mythological abode of the hydra.] (Zoöl.) A Linnæan genus of parasitic Entomostraca, — the same as the family Lernæidæ.
☞ The genus is restricted by modern zoölogists to a limited number of species similar to Lernæa branchialis found on the gills of the cod.