REVIEW OF THE SYSTEMATICS AND ECOLOQY OF OCEANIC SQUIDS
233
T. Phasmatopsis
I n this genus we may group three adult forms having light organs
on the ventral side of the liver. Since the affinities of the genus were
discussed by the author (Clarke, 1962d) another species has been
added (Voss, 1963b).
1. Phasmatopsis cymoctypus Rochebrune, 1884
Loligopsis pavo d'orbigny, 1835-1848 (pars)
Taonius cymoctypus Hoyle, 1885b
This has been recovered on two occasions, both from the vicinity
of Madeira (Rochebrune, 1884; Clarke, 1962d) and both found dead
at the surface. The specimens have dorsal mantle lengths of 79.0 cm
and 81.0 cm and one is an adult female (Clarke, 1962d). The nidamental
glands are 12.0 cm in length; the ova varied in size and colour and this
led the author to suggest that ova are possibly shed in small numbers
throughout adult life (Clarke, 1962d).
2. Phasmatopsis oceanica (Voss, 1960)
Carynoteuthis oceanica Voss, 1960a
Megalocranchia abyssicola Joubin, 1924
This species has been recorded from the North Atlantic at 32'08"
64"33'W and 32' 12"
64'36'W (Voss, 1960a) and as Megalocranchia
abyssicola a t 30'45" 25'47'W (Joubin, 1924). It was caught a t 0-260 m,
a t night (Joubin, 1924) and with an open net fished a t about 120&
1 800 m (3 500 m of wire out) (Voss, 1960a). The largest female was
7.6 cm and the largest (unsexed) specimen was 8.0 cm in mantle length.
3. Phasmatopsis lucifer Vow, 1963
This species is intermediate between Phusmatopsis and Taonius
because, while it is allied to the former in having flaps on the dorsal
component of the funnel organ and a light organ on the tip of an arm
(albeit a different arm), it is closer to Taonius in the form of the light
organs on the eye bulb and in the absence of light organs on the liver.
The type specimen was caught at 29' 06"
88'02'W in an open net
fished at 275 m (Voss, 1963b). It is a gravid female with a mantle
length of 9.6 cm. The ova appear to be uniform in size.
U. Taonius
A Iarge number of specimens referabIe to this genus have been
described and nearly all of them belong to T. megalops and T . pavo.
233
T. Phasmatopsis
I n this genus we may group three adult forms having light organs
on the ventral side of the liver. Since the affinities of the genus were
discussed by the author (Clarke, 1962d) another species has been
added (Voss, 1963b).
1. Phasmatopsis cymoctypus Rochebrune, 1884
Loligopsis pavo d'orbigny, 1835-1848 (pars)
Taonius cymoctypus Hoyle, 1885b
This has been recovered on two occasions, both from the vicinity
of Madeira (Rochebrune, 1884; Clarke, 1962d) and both found dead
at the surface. The specimens have dorsal mantle lengths of 79.0 cm
and 81.0 cm and one is an adult female (Clarke, 1962d). The nidamental
glands are 12.0 cm in length; the ova varied in size and colour and this
led the author to suggest that ova are possibly shed in small numbers
throughout adult life (Clarke, 1962d).
2. Phasmatopsis oceanica (Voss, 1960)
Carynoteuthis oceanica Voss, 1960a
Megalocranchia abyssicola Joubin, 1924
This species has been recorded from the North Atlantic at 32'08"
64"33'W and 32' 12"
64'36'W (Voss, 1960a) and as Megalocranchia
abyssicola a t 30'45" 25'47'W (Joubin, 1924). It was caught a t 0-260 m,
a t night (Joubin, 1924) and with an open net fished a t about 120&
1 800 m (3 500 m of wire out) (Voss, 1960a). The largest female was
7.6 cm and the largest (unsexed) specimen was 8.0 cm in mantle length.
3. Phasmatopsis lucifer Vow, 1963
This species is intermediate between Phusmatopsis and Taonius
because, while it is allied to the former in having flaps on the dorsal
component of the funnel organ and a light organ on the tip of an arm
(albeit a different arm), it is closer to Taonius in the form of the light
organs on the eye bulb and in the absence of light organs on the liver.
The type specimen was caught at 29' 06"
88'02'W in an open net
fished at 275 m (Voss, 1963b). It is a gravid female with a mantle
length of 9.6 cm. The ova appear to be uniform in size.
U. Taonius
A Iarge number of specimens referabIe to this genus have been
described and nearly all of them belong to T. megalops and T . pavo.