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MALCOLM R. CLARKE
type was caught with an open trawl; it was given originally as 650
fathoms (1 190 m) and later as 350 fathoms (639 m) (Massy, 1909).
The largest measured specimen has a mantle length of 3.9 cm (Massy,
1907). All specimens other than the type were recovered from Tuna
stomachs in which as many as sixteen specimens were found in a
single stomach (Bouxin and Legendre, 1936).
2. Helicocranchia beebei Robson, 1948
A species only known from the rather briefly described type
specimens taken to the south and south-east of COCOS Islands, the
Galapagos Islands at the surface, and with open nets fished to a
maximum of 1520 m. The only specimen measured has a mantle
length of 5.4 cm.
Q . Anomnlocranchia
The single species placed in this genus would be better grouped
with Megalocranchia species.
1. Anomalocranchia impennis Robson, 1924
This species is only known from the type which was caught off
South Africa with an open net fished to 760 m (Robson, 1924~). The
mantle length is about 5.7 cm.
R. Hensenioteuthis
A genus containing only one species which Massy (1916b) removed
to Teuthowenia.
1. Hensenioteuthis joubini Pfeffer, 1912
This has been recorded from the North Atlantic (Pfeffer, 1900;
Joubin, 1920) and from the Indian Ocean (Massy, 1916b). It has been
taken in open nets fished t o 400 m (Pfeffer, 1900) and to 1000 m
(Joubin, 1900; Massy, 1916b). The largest has a mantle length of
1.4 cm (Massy, 1916b).
S . Fusocranchia
1. Fusocranchia alphu Joubin, 1920
This has been recorded from the North Atlantic a t 32' 18" 23'58'W
and possibly at 36' 46" 26'41'W and 37' 35" 24'40'W (Joubin, 1920).
The specimens were taken with open nets fished to 1 000 m (the type),
3 250 m and at the surface. The largest has a mantle length of 0.97 cm
and is almost certainly immature.