HEVIKW' OF T H E SYSTEMATICS AND ECOLOGY OF O C E A N I C SQCJIDS
218
it has been listed for South Africa (Massy. 1925). Chun's (1913)
specimen differs slightly from the other specimens.
'l'wo specimens were found a t the surface (\'&any, 183T; Joubin,
1 8 9 8 ~ )
and one was taken in a n open net fished to 2 600 m (Chun. 1913).
The largest specimen has a mantle length of 22.G cm (Joubin, 1 8 9 8 ~ ) .
X specimen was recovered from the stomach of Alepisaurus fer0.r
Voss, 1956b).
Enoptrotruthis spinicauda (Berry, 1920) is probably a larval form
and Grimpe (1965) considered t h a t it is probably a young specimen of
G, bonplandi. It was recovered from 28'51'N TO'OS'W in the North
Atlantic at less than 55 m depth. The mantle length is on1.v 1.7 cm.
XIX. CRANCHIIDAE
This family may be divided into two sub-families which are easily
distinguished, the Craiichiinae aiid the Taoniinae. Members of the
Cranchiinae have cartilaginous tubercles on the mantle and several
comparatively small light organs on the bulb of the eye while squids
in the 'I'aoniinae have no tubercles aiid no more than three light organs
on tlie bulb of' the eye. Ascocranchia ,joubi)ii Toss 1!j62b is an intermediate forin but the division of this large familv into two is useful
for our present purposes.
In both sub-families taxonomic difficulties arise from tlie naming
of larval forms as separate species and, particularly in the Taoniinae.
from the almost indiscriminate use of generic names. Until a large
number of specimens. in addition to the types, can be examined many
questions of relationship aiid nomenclature will remaiii unanswered
but here an attempt has been made to outline the problem.
C'RANCHIINAE
A. Cranchin
A4 clearly defined genus, i t is usually regarded as containing onr
widely distributed species (Fig. 45) although geographical differences
have been noted (Hogle, 1904b; Robson. 1924r) and Pfeffer (1912)
named two forms C. scabra hispidn and C . s. tenuit~irtaczilata.
1. Cruiichia scubrcc Leach, 18 1 i
Philori exis Eylais d'0rbigny , 1835-1 848
Crauchia hispida Pfeffer, 1884
Crunchin teri uite,ituciLZata Pfeffer, 1884
One of the commonest cranchiids (Figs. 45,4G), this has been recorded
from the North Atlantic (d'Orhigny, 183% 1848; Steenstrup. 1861 ;
218
it has been listed for South Africa (Massy. 1925). Chun's (1913)
specimen differs slightly from the other specimens.
'l'wo specimens were found a t the surface (\'&any, 183T; Joubin,
1 8 9 8 ~ )
and one was taken in a n open net fished to 2 600 m (Chun. 1913).
The largest specimen has a mantle length of 22.G cm (Joubin, 1 8 9 8 ~ ) .
X specimen was recovered from the stomach of Alepisaurus fer0.r
Voss, 1956b).
Enoptrotruthis spinicauda (Berry, 1920) is probably a larval form
and Grimpe (1965) considered t h a t it is probably a young specimen of
G, bonplandi. It was recovered from 28'51'N TO'OS'W in the North
Atlantic at less than 55 m depth. The mantle length is on1.v 1.7 cm.
XIX. CRANCHIIDAE
This family may be divided into two sub-families which are easily
distinguished, the Craiichiinae aiid the Taoniinae. Members of the
Cranchiinae have cartilaginous tubercles on the mantle and several
comparatively small light organs on the bulb of the eye while squids
in the 'I'aoniinae have no tubercles aiid no more than three light organs
on tlie bulb of' the eye. Ascocranchia ,joubi)ii Toss 1!j62b is an intermediate forin but the division of this large familv into two is useful
for our present purposes.
In both sub-families taxonomic difficulties arise from tlie naming
of larval forms as separate species and, particularly in the Taoniinae.
from the almost indiscriminate use of generic names. Until a large
number of specimens. in addition to the types, can be examined many
questions of relationship aiid nomenclature will remaiii unanswered
but here an attempt has been made to outline the problem.
C'RANCHIINAE
A. Cranchin
A4 clearly defined genus, i t is usually regarded as containing onr
widely distributed species (Fig. 45) although geographical differences
have been noted (Hogle, 1904b; Robson. 1924r) and Pfeffer (1912)
named two forms C. scabra hispidn and C . s. tenuit~irtaczilata.
1. Cruiichia scubrcc Leach, 18 1 i
Philori exis Eylais d'0rbigny , 1835-1 848
Crauchia hispida Pfeffer, 1884
Crunchin teri uite,ituciLZata Pfeffer, 1884
One of the commonest cranchiids (Figs. 45,4G), this has been recorded
from the North Atlantic (d'Orhigny, 183% 1848; Steenstrup. 1861 ;