Careproctus opisthotremus Gilbert & Burke, 1912. Distalpore Snailfish. To 7.7 cm (3 in) SL. Known from two specimens: from eastern North Pacific Ocean south of Agattu Island (the holotype) and from Bering Sea north of Umnak Island. Depth: 1,913 m (6,276 ft; the holotype) and 2,562 m (8,405 ft). All in Mecklenburg et al. (2002).