(syn. Fregetta Ϯ White-bellied Storm-petrel F. grallaria) Genus Fregetta Bonaparte, 1855, storm-petrel; Gr. ορνις ornis, ορνιθος ornithos bird; "F. grallaria Vieillot, with which F. leucogaster Gould has been confounded, differs generically from the latter, exactly as Oceanites nereis differs from O. oceanicus. Consequently those who accept Garrodia as a valid genus must generically separate F. grallaria also, and for their use I introduce the genus FREGETTORNIS nov. with type F. grallaria Vieillot." (Mathews 1912).