Species: Hydrolagus mccoskeri, Galapagos ghost-shark

Hydrolagus mccoskeri Barnett et al, 2006

Galapagos ghost-shark

Body compressed, elongate, tapering to a filamentous tail; head relatively small; snout short, round, blunt; eyes large, bright green; nostrils large, before mouth, connected to outer corner of mouth by a deep groove covered with a flap; mouth under head; teeth are plates, 2 pairs above, 1 pair below; gill opening before pectoral, covered by fleshy operculum; 2 separate dorsal fins; 1st dorsal fin large, triangular, erect, with a long, slightly curved spine at front, that spine attached except for upper 1/5 free of fin; 2nd dorsal fin low, long based, its border weakly indented in center; anal fin absent; pectoral fins broad, triangular; pelvic fins broad, triangular; tail fin elongate, lance-like, both lobes about equal in height , with a whip-like rear filament; lateral line canals well developed, on head and body noticeably open; skin smooth, no scales; males with large, multipointed external sex organs.