18
SOLENID^.
The locomotion of this species is the same as that of
S. pellucidus.
Its foot is permeated by a series of aquiferous ducts or canals, causing a great expansibility of
that organ.
Gould says that the animal is " too long
for the shell ; ^' but its power of contraction equals that
of its extension.
A distorted specimen, found by Mr.
BarleC;, and now in the University Museum at Oxford,
is bent in an extraordinary degree. Whether the curve
of such a crooked generation might in course of ages be
increased, so as to form a nearly complete circle, would
be a curious speculation.
In the time of Aldrovandus it was called by the
Venetians "cappa longa." Linne doubted w^hether it
were not a variety of >S'. siliqua. The one certainly inhabits deeper water than the other, and they are closely
related in form. The present species is Lister's S. curvus
(accidentally binominal), the Hypogoia falcata of Poli,
Ensis magnus of Schumacher, S. ensiformis of S. Wood,
and Ensatella Europaea of Swainson.
3. S. si'liqua"^, Linne.
8. siliqua, Linn. S. N. p. 1 1 13 ; F. & 11. i. p. 240, pi. xiv. f. 3, and (animal)
pi. I. f. 1.
BoDT similar to that of S. ensis, except in being rather less
compressed, and in the foot being yellowish -white, with its
extremity abruptly truncated, and marked with extremely fine
closo-sct and veiy pale lead-coloured lines.
Shell so closely resembling that of >S'. ensis, except in being
of a much larger size, that it is sufficient to mention the few
particulars in which tliey differ. This is almost strai^^'ht instead of curved, much deeper in proportion to its breadth, and
more solid ; the mrirgins at both ends are abruptly truncated
the cardinal teeth in tlie left valve nre blunter, and sometimes
cloven; and the lateral tooth in this valve is often double.
L. 1. B. 8.
* A pod.
SOLENID^.
The locomotion of this species is the same as that of
S. pellucidus.
Its foot is permeated by a series of aquiferous ducts or canals, causing a great expansibility of
that organ.
Gould says that the animal is " too long
for the shell ; ^' but its power of contraction equals that
of its extension.
A distorted specimen, found by Mr.
BarleC;, and now in the University Museum at Oxford,
is bent in an extraordinary degree. Whether the curve
of such a crooked generation might in course of ages be
increased, so as to form a nearly complete circle, would
be a curious speculation.
In the time of Aldrovandus it was called by the
Venetians "cappa longa." Linne doubted w^hether it
were not a variety of >S'. siliqua. The one certainly inhabits deeper water than the other, and they are closely
related in form. The present species is Lister's S. curvus
(accidentally binominal), the Hypogoia falcata of Poli,
Ensis magnus of Schumacher, S. ensiformis of S. Wood,
and Ensatella Europaea of Swainson.
3. S. si'liqua"^, Linne.
8. siliqua, Linn. S. N. p. 1 1 13 ; F. & 11. i. p. 240, pi. xiv. f. 3, and (animal)
pi. I. f. 1.
BoDT similar to that of S. ensis, except in being rather less
compressed, and in the foot being yellowish -white, with its
extremity abruptly truncated, and marked with extremely fine
closo-sct and veiy pale lead-coloured lines.
Shell so closely resembling that of >S'. ensis, except in being
of a much larger size, that it is sufficient to mention the few
particulars in which tliey differ. This is almost strai^^'ht instead of curved, much deeper in proportion to its breadth, and
more solid ; the mrirgins at both ends are abruptly truncated
the cardinal teeth in tlie left valve nre blunter, and sometimes
cloven; and the lateral tooth in this valve is often double.
L. 1. B. 8.
* A pod.