206
MALCOLM R . CLARKE
E. Chiropsis
1. Chiropsis mega Joubin, 1933
A species with very distinctive short, broad ventral arms which has
only been recorded once, from the North Atlantic at 25' 50" 76'55'w.
It was taken in an open net fished to 3 000 m, is a sexually mature
male with a penis protruding well out of the mantle opening and has a
mantle length of 17.0 cm.
F. Vuldemaria
1. VaZdemaria dame Joubin, 1931
This species has been recorded twice. from the North Atlantic:
12"ll'N 35'49'W and 17' 41"
60'58'W (Joubin, 1931, 1933). It was
taken with open nets fished to about 500 m and 2 680 m respectively.
The type has a mantle length of 6.0 cm, Joubin (1933) described the
hectocotylus of the mature male.
G . Mastigoteuthis
1. Nastigoteuthis ugassizi Verrill, 1881
A species described from the western North Atlantic (Verrill,
1881c) (Fig. 42) it has since been recorded rather dubiously from
25' 52"
19'22'W (Hoyle, 1886a) on the basis of fragments of tentacle
found adhering t o a dredge rope. Verrill's specimens were taken with
open nets fished at 647 m and 1 632 m. Both specimens were male and
had mantle lengths of 4.6 cm and 9.9 cm. One contained small Crustacea in the stomach.
2. Nastigoteuthis cordiformis Chun, 1908
A widespread species (Fig. 42) recorded from the East Indies
(Chun, 1908, 1910a; Adam, 1954), the Philippines (Voss, 1963a),
Japan, (Sasaki, 1920, 1929a) and the North Atlantic (Joubin, 1924).
It has been taken in an open net fished to 330 m (Sasaki, 1920) and in
one lowered to 2 500 m (Joubin, 1924) but nearly all the specimens
have been caught with nets fished between 330-720 m. Voss (1963a)
considers that this is a " typical mesopelagic species ".
The largest specimen has a mantle length of 9-6 cm (Adam, 1954).
It should be noted that there are a number of differences between
Sasaki's description (1920, 1929a) and those of Chun (1910a) and Voss
(1963a).
MALCOLM R . CLARKE
E. Chiropsis
1. Chiropsis mega Joubin, 1933
A species with very distinctive short, broad ventral arms which has
only been recorded once, from the North Atlantic at 25' 50" 76'55'w.
It was taken in an open net fished to 3 000 m, is a sexually mature
male with a penis protruding well out of the mantle opening and has a
mantle length of 17.0 cm.
F. Vuldemaria
1. VaZdemaria dame Joubin, 1931
This species has been recorded twice. from the North Atlantic:
12"ll'N 35'49'W and 17' 41"
60'58'W (Joubin, 1931, 1933). It was
taken with open nets fished to about 500 m and 2 680 m respectively.
The type has a mantle length of 6.0 cm, Joubin (1933) described the
hectocotylus of the mature male.
G . Mastigoteuthis
1. Nastigoteuthis ugassizi Verrill, 1881
A species described from the western North Atlantic (Verrill,
1881c) (Fig. 42) it has since been recorded rather dubiously from
25' 52"
19'22'W (Hoyle, 1886a) on the basis of fragments of tentacle
found adhering t o a dredge rope. Verrill's specimens were taken with
open nets fished at 647 m and 1 632 m. Both specimens were male and
had mantle lengths of 4.6 cm and 9.9 cm. One contained small Crustacea in the stomach.
2. Nastigoteuthis cordiformis Chun, 1908
A widespread species (Fig. 42) recorded from the East Indies
(Chun, 1908, 1910a; Adam, 1954), the Philippines (Voss, 1963a),
Japan, (Sasaki, 1920, 1929a) and the North Atlantic (Joubin, 1924).
It has been taken in an open net fished to 330 m (Sasaki, 1920) and in
one lowered to 2 500 m (Joubin, 1924) but nearly all the specimens
have been caught with nets fished between 330-720 m. Voss (1963a)
considers that this is a " typical mesopelagic species ".
The largest specimen has a mantle length of 9-6 cm (Adam, 1954).
It should be noted that there are a number of differences between
Sasaki's description (1920, 1929a) and those of Chun (1910a) and Voss
(1963a).