8
SOLENIDiE.
the Nicobar Isles. De Gerville included it in his list
from Brittany under the name of Solen pellucidus ) and
I was informed by M. Cailliaud that it had been taken
alive on that coast. Gould considered that it might be
the ^olen centralis of Say, a common North-American
species ; but this is very doubtful.
^olen gibbus, Spengler, was recorded by Dr. Turton as
British^ under the name of B. decliviSj Mrs. Loseombe
being supposed to have found a specimen in the Scilly
Isles.
It is a West-Indian shell, and known as S. Guineensis, Chemnitz, and >S^. caribbaus, Lamarck. This
species is likewise described by Gould as NorthAmerican.
Genus II. CE'RATISO'LEN *, Forbes. PI. I. f. 2.
Body oblong, flattened : mantle shghtly projecting above and
below on the anterior side : tubes for the most part separated,
and considerably extended : foot conical, and capable of being
expanded into a club -like form.
Shell resembling a bean-pod in shape, thin, nearly equilateral, sculptured in the middle with extremely fine striae,
which radiate from the beaks : hinge strengthened inside by a
short rib, which diverges obhquely from the heak in each valve
towards the front margin : teeth, one cardinal in the right, and
two in the left valve, besides short but distinct laterals :
pallial scar broad, with a shallow fold.
Ceratisolen is a connecting link between Solecurtus
and Solen. Its shell has the shape and nearly central
beaks of the former, and the texture and teeth of the
latter ; but it differs from both in the hinge being
strengthened by internal cross ribs. The animal has
its mantle-tubes separate and extended as in Solecurtus.
No other species appears to be known except our own,
^ A pod-shaped Solen.
SOLENIDiE.
the Nicobar Isles. De Gerville included it in his list
from Brittany under the name of Solen pellucidus ) and
I was informed by M. Cailliaud that it had been taken
alive on that coast. Gould considered that it might be
the ^olen centralis of Say, a common North-American
species ; but this is very doubtful.
^olen gibbus, Spengler, was recorded by Dr. Turton as
British^ under the name of B. decliviSj Mrs. Loseombe
being supposed to have found a specimen in the Scilly
Isles.
It is a West-Indian shell, and known as S. Guineensis, Chemnitz, and >S^. caribbaus, Lamarck. This
species is likewise described by Gould as NorthAmerican.
Genus II. CE'RATISO'LEN *, Forbes. PI. I. f. 2.
Body oblong, flattened : mantle shghtly projecting above and
below on the anterior side : tubes for the most part separated,
and considerably extended : foot conical, and capable of being
expanded into a club -like form.
Shell resembling a bean-pod in shape, thin, nearly equilateral, sculptured in the middle with extremely fine striae,
which radiate from the beaks : hinge strengthened inside by a
short rib, which diverges obhquely from the heak in each valve
towards the front margin : teeth, one cardinal in the right, and
two in the left valve, besides short but distinct laterals :
pallial scar broad, with a shallow fold.
Ceratisolen is a connecting link between Solecurtus
and Solen. Its shell has the shape and nearly central
beaks of the former, and the texture and teeth of the
latter ; but it differs from both in the hinge being
strengthened by internal cross ribs. The animal has
its mantle-tubes separate and extended as in Solecurtus.
No other species appears to be known except our own,
^ A pod-shaped Solen.