Lamellaria membranacea Montagu, 1815, [Basis of the current name] Range: 38.58°N ; 73.22°W to 0°W Depth: 395 m (live 395 m) Maximum Reported Size: 120 mm References: Ev. Marcus (1984) M Comments: Internal shell 43 mm (Ev. Marcus 1984). Combining Genera: Oscanius
Gymnotoplax barashi Ev. Marcus, 1977, [Synonym] References: Ev. Marcus (1984) s
Koonsia obesa auct. non Verrill, 1882, [Not available] Range: 38.58°N ; 73.22°W Depth: 395 m (live 395 m) Maximum Reported Size: 43 mm References: Ev. Marcus (1984) s Comments: Misidentification by Verrill (1882).
