224
MALCOLM R. CLARKE
(Lesueur, 1821 given as "Pacific ocean" 37'5 33"E), from the Indian
Ocean (d'orbigny, 1835-1848, 1845; Gray, 1849; Steenstrup, 1861)
and the Philippines (Elera, 1896). It has been taken dead or dying
a t the surface (Richard, 1903; Joubin, 1920) and has been caught in
open trawls fished as deep as 1 000-1 100 m. (Voss, 1960a). The largest
specimen known to the author has a mantle length of 14.5 cm (Rees
and Maul, 1956). Females 4.5 cm and 5.5 cm in mantle length have
very large nidamental glands and are gravid (Voss, 1960a). Ltrnnberg
(1 896b) mentioned a female with four large nidamental glands.
2. Leachia eschscholtzii (Rathke, 1835)
Perothis eschscholtzii Rathke, 1835
This has been obtained from 28"s 310"W* (Rathke, 1835; Chun,
1910a) and 39"s 53"W (Pfeffer, 1912). The largest specimen has a
mantle length of 8.45 cm (Pfeffer, 1912). Chun (1910a) mentions that
his material includes a t least one mature female.
F. Drechselia
A genus containing a single species having several unusual features
for a cranchiid the chief of which is its robustness (Fig. 48).
1, Drechselia danae Joubin, 1931
The two known specimens of this species were caught in the eastern
Pacific a t 6' 40"
80"47'W and a t a depth of 2 680 m. with an open
net (Joubin, 1931). The female is 17.1 cm in mantle length (from the
figure) and is adult. The male has an elaborately hectocotylized right
ventral arm and is roughly the same size as the female.
G. Ascocranchia
A genus with a single species which has features of both the Cranchiinae and the Taoniinae (Voss, 196213).
1. Ascocranchia joubini Voss, 1962
Based on a specimen caught by the Princess Alice this was taken
a t 45' 02"
13'05'W in the North Atlantic (Voss, 1962b). It was
caught near the surface, is a female with four nidamental glands and
has a mantle length of 6.3 cm.
H. Egea
The single species in this genus is probably related to Liocranchia
but it has no cartilaginous tubercles on the mantle.
* Position as given i n paper.
MALCOLM R. CLARKE
(Lesueur, 1821 given as "Pacific ocean" 37'5 33"E), from the Indian
Ocean (d'orbigny, 1835-1848, 1845; Gray, 1849; Steenstrup, 1861)
and the Philippines (Elera, 1896). It has been taken dead or dying
a t the surface (Richard, 1903; Joubin, 1920) and has been caught in
open trawls fished as deep as 1 000-1 100 m. (Voss, 1960a). The largest
specimen known to the author has a mantle length of 14.5 cm (Rees
and Maul, 1956). Females 4.5 cm and 5.5 cm in mantle length have
very large nidamental glands and are gravid (Voss, 1960a). Ltrnnberg
(1 896b) mentioned a female with four large nidamental glands.
2. Leachia eschscholtzii (Rathke, 1835)
Perothis eschscholtzii Rathke, 1835
This has been obtained from 28"s 310"W* (Rathke, 1835; Chun,
1910a) and 39"s 53"W (Pfeffer, 1912). The largest specimen has a
mantle length of 8.45 cm (Pfeffer, 1912). Chun (1910a) mentions that
his material includes a t least one mature female.
F. Drechselia
A genus containing a single species having several unusual features
for a cranchiid the chief of which is its robustness (Fig. 48).
1, Drechselia danae Joubin, 1931
The two known specimens of this species were caught in the eastern
Pacific a t 6' 40"
80"47'W and a t a depth of 2 680 m. with an open
net (Joubin, 1931). The female is 17.1 cm in mantle length (from the
figure) and is adult. The male has an elaborately hectocotylized right
ventral arm and is roughly the same size as the female.
G. Ascocranchia
A genus with a single species which has features of both the Cranchiinae and the Taoniinae (Voss, 196213).
1. Ascocranchia joubini Voss, 1962
Based on a specimen caught by the Princess Alice this was taken
a t 45' 02"
13'05'W in the North Atlantic (Voss, 1962b). It was
caught near the surface, is a female with four nidamental glands and
has a mantle length of 6.3 cm.
H. Egea
The single species in this genus is probably related to Liocranchia
but it has no cartilaginous tubercles on the mantle.
* Position as given i n paper.