REVIEW OF THE SYSTEMATICS AND ECOLOGY OF OCEANIC SQUIDS
187
I. Enoploion
1. Enoploion eusticum Pfeffer, 1912
This species includes several juveniles which cannot be placed
elsewhere with any certainty. They have been recorded from the
eastern North Atlantic at 32'00" 77'45'W (Pfeffer, 1912) and 36'17"
1'58'W (Joubin, 1920) and from the western Mediterranean at 39'32"
5'15'E and 36'54" 2'47'E (Degner, 1925). They were taken at less
than about 30 m (Degner, 1925) and with an open net fished to 1 800 m
(Joubin, 1920). The largest is only 0.42 cm in mantle length.
XIII. OCTOPOTEUTHIDAE
A. Octopoteuthis
This genus contains several named species but some of them are
based on larval forms and their relationships are not clear.
1. Octopoteuthis danae (Joubin, 1931)
Octopodoteuthis danae Joubin, 1931
A species having prominent light organs on the head and mantle,
that is known only from the type specimen which was recovered from
the North Atlantic a t 33'15" 68'20'W with an open net fished at
45 m. The mantle length is about 3.0 cm (measured from the figure).
2. Octopoteuthis sicuh Riippell, 1844
Octopodoteuthis sicula Krohn, 1845
Veranya siculu Appellof, 1889
Considerable variation between the various descriptions of this
species suggests that a revision based on material from a wide geographical range may show that several species are included under this
name (Fig. 36). Pfeffer (1912) recognized a Mediterranean and an
Atlantic form which were named as varieties by Grimpe (1922) although
Degner (1925) found no difference between specimens of the two
geographic regions. 0. persica Naef, 1923, 0. indica Naef, 1923 and
0. nielseni Robson, 1948 are all based on larval forms and may well
prove to be synonyms. 0. sicula has been recorded from the western
Mediterranean (Riippell, 1844; Krohn, 1845; Gray, 1849; VBrany, 1851;
Pfeffer, 1884, 1900, 1912; Weiss, 1889; Appellof, 1889; Jatta, 1896;
Ficalbi, 1899; Naef, 1916, 1921, 1923; Issel, 1925b; Degner, 1925), the
eastern Mediterranean (Degner, 1925; Digby, 1949), the North Atlantic
(Massy, 1907, 1909, 1913, 1928a; Pfeffer, 1912; Chun, 1913; Joubin,
1920; Bouxin and Legendre, 1936; Adam, 1960c; Rsncurel, 1964), the
South Atlantic (Adam, 1952, 1960c), the Indian Ocean (Chun, 1910a),
187
I. Enoploion
1. Enoploion eusticum Pfeffer, 1912
This species includes several juveniles which cannot be placed
elsewhere with any certainty. They have been recorded from the
eastern North Atlantic at 32'00" 77'45'W (Pfeffer, 1912) and 36'17"
1'58'W (Joubin, 1920) and from the western Mediterranean at 39'32"
5'15'E and 36'54" 2'47'E (Degner, 1925). They were taken at less
than about 30 m (Degner, 1925) and with an open net fished to 1 800 m
(Joubin, 1920). The largest is only 0.42 cm in mantle length.
XIII. OCTOPOTEUTHIDAE
A. Octopoteuthis
This genus contains several named species but some of them are
based on larval forms and their relationships are not clear.
1. Octopoteuthis danae (Joubin, 1931)
Octopodoteuthis danae Joubin, 1931
A species having prominent light organs on the head and mantle,
that is known only from the type specimen which was recovered from
the North Atlantic a t 33'15" 68'20'W with an open net fished at
45 m. The mantle length is about 3.0 cm (measured from the figure).
2. Octopoteuthis sicuh Riippell, 1844
Octopodoteuthis sicula Krohn, 1845
Veranya siculu Appellof, 1889
Considerable variation between the various descriptions of this
species suggests that a revision based on material from a wide geographical range may show that several species are included under this
name (Fig. 36). Pfeffer (1912) recognized a Mediterranean and an
Atlantic form which were named as varieties by Grimpe (1922) although
Degner (1925) found no difference between specimens of the two
geographic regions. 0. persica Naef, 1923, 0. indica Naef, 1923 and
0. nielseni Robson, 1948 are all based on larval forms and may well
prove to be synonyms. 0. sicula has been recorded from the western
Mediterranean (Riippell, 1844; Krohn, 1845; Gray, 1849; VBrany, 1851;
Pfeffer, 1884, 1900, 1912; Weiss, 1889; Appellof, 1889; Jatta, 1896;
Ficalbi, 1899; Naef, 1916, 1921, 1923; Issel, 1925b; Degner, 1925), the
eastern Mediterranean (Degner, 1925; Digby, 1949), the North Atlantic
(Massy, 1907, 1909, 1913, 1928a; Pfeffer, 1912; Chun, 1913; Joubin,
1920; Bouxin and Legendre, 1936; Adam, 1960c; Rsncurel, 1964), the
South Atlantic (Adam, 1952, 1960c), the Indian Ocean (Chun, 1910a),