Genus Oceanapia Norman, 1869

Synonymy (see Desqueyroux-Faúndez & Valentine 2002).

Type species. Isodictya robusta Bowerbank, 1866

Definition. Phloeodictyidae with a compact external ectosomal crust composed of tangential megascleres, often

surrounding a hollow body and numerous ubiquitous fistulae, megascleres oxeas or strongyles and microscleres, if present, sigmata or toxas (De Weerdt 1985).