AGLAJIDAE PILSBRY, 1895 (1847)

Chaban, Elena M., Ekimova, Irina A., Schepetov, Dimitry M. & Chernyshev, Alexei V., 2022, The new genus Aglaona: the first abyssal aglajid (Heterobranchia: Cephalaspidea: Aglajidae) with a description of two new species from the north-western Pacific Ocean, Zoological Journal of the Linnean Society 196, pp. 198-214 : 204

FAMILY AGLAJIDAE PILSBRY, 1895 (1847)

Diagnosis (modified from Zamora-Silva & Malaquias, 2018): Shell internal, typically reduced, but welldeveloped bulloid in some species. Mantle typically with caudal asymmetrical lobes. Gizzard plates absent. Radula typically absent; when present, radular formula 1:0:1 or 2:1:0:1:2; inner laterals bearing one or two large or many small denticles on inner border. Penial papilla with chitinous stylet or plate. Yellow gland present (in histologically studied specimens). Sensory mound on anterior part of head with numerous bristles over surface, or without bristles in some species. Fifteen genera have been included in the family (MolluscaBase eds, 2021a) and another new genus, Aglaona , which is described below.