|The family Aglajidae
includes elongate species with small internal shells. Most are
nocturnal but brightly colored species such as Chelidonura hirundinina are
diurnal. They are predators feeding on acoelomate flatworms, polychaete
other opisthobranchs. About 16 species are known from Hawaii in eight
genera (Biuve, Chelidonura, Nakamigawaia, Niparaya, Odontoglaja, Philinopsis, Spinoaglaja, and Tubulophilinopsis).
Pilsbry, 1895 is probably not identifiable with modern material. (Kay,