Genus Scaeurgus F. H. Troschel, 1857

(4-3-2-2-5-2-3-30-0-0-0-0-0)
Ref. Abbott, 1974 p 595
Amer. Fish. Soc., 1980 p 152
Nesis, 1987 p 297
Vaught, 1989 p 112

patagiatus S. S. Berry, 1913
(4-3-2-2-5-2-3-30-0-1-0-0-0)
[=Scaeurgus uncirrhus (A. d'Orbigny, 1840)]
Ref. Abbott, 1974 p 595
[=Scaeurgus unicirrhus (delle Chiaje, 1830)]
Ref. Nesis, 1987 p 297

titanotus F. H. Troschel, 1857
(4-3-2-2-5-2-3-30-0-2-0-0-0)
[=Pteroctopus tetracirrhus (delle Chiaje, 1830)]
Ref. Abbott, 1974 p 595

uncirrhus (A. d'Orbigny, 1840) [T]
(4-3-2-2-5-2-3-30-0-3-0-0-0)
Unicorn Octopus
Ref. Amer. Fish. Soc., 1980 p 152
Syn. Octopus scorpio S. S. Berry, 1920;
Scaeurgus patagiatus S. S. Berry, 1913
Ref. Abbott, 1974 p 595

unicirrhus (delle Chiaje, 1830)
(4-3-2-2-5-2-3-30-0-4-0-0-0)
Syn. Scaeurgus patagiatus S. S. Berry, 1913
Ref. Nesis, 1987 p 297,308 d