28
PANDORID/E.
and afterwards P. 7'ostrata ; the young is tlie P. flexuosa
of Philippic and the animal the Hyjwgcea gibba of Poli.
It is also the Trutina solenoides of Brown. The variety
obtusa Avas described by Meuschen as Anomia tabacca,
by Montagu as Solen pinna, and by Leach as P. glacialis ; the young is the P. oblonga of Philippi. Lamarck
changed the specific name imposed by Linne^ either
from caprice (as seems to have been his custom), or on
the ground that it denoted an essential character of the
genus and therefore Avas superfluous. I am not satisfied
with this reason, believing that all designations, Avhether
generic or specific, are merely symbols of distinction,
and that the law of priority in zoological nomenclature
oui!:ht not to be disrcGrarded because the name of one
species represents a character that is common to others
of the same genus. I have restored the original name,
by which this species is w^ell known throughout the
greater part of Europe.
Genus II. LYON'SIA*, Turton. PL II. f. 1.
Body oblong, somewhat compressed, rather thick : ffills
forming apparently a single leaf on either side, in consequence
of each pair being doubled upon itself: palpn long and narrow :
foot tongue-shaped, rather large, flattened, and provided with
a byssal groove.
Shell oblong, nearly equilateral, finely striated lengthwise ;
right valve more convex than the left : epidermis fibrous :
himje furnished w^th a free plate or ossicle, which covers the
cartilage : muscular scars slight ; anterior oblong, posterior
roundish.
A link connecting the Pandoridae with the Anatinida,
having the same shape and pearly nature as the former,
and the peculiar hinge-process or ossicle of the latter
* Named after the late Mr. W. Lyons, an active British concliologist.
PANDORID/E.
and afterwards P. 7'ostrata ; the young is tlie P. flexuosa
of Philippic and the animal the Hyjwgcea gibba of Poli.
It is also the Trutina solenoides of Brown. The variety
obtusa Avas described by Meuschen as Anomia tabacca,
by Montagu as Solen pinna, and by Leach as P. glacialis ; the young is the P. oblonga of Philippi. Lamarck
changed the specific name imposed by Linne^ either
from caprice (as seems to have been his custom), or on
the ground that it denoted an essential character of the
genus and therefore Avas superfluous. I am not satisfied
with this reason, believing that all designations, Avhether
generic or specific, are merely symbols of distinction,
and that the law of priority in zoological nomenclature
oui!:ht not to be disrcGrarded because the name of one
species represents a character that is common to others
of the same genus. I have restored the original name,
by which this species is w^ell known throughout the
greater part of Europe.
Genus II. LYON'SIA*, Turton. PL II. f. 1.
Body oblong, somewhat compressed, rather thick : ffills
forming apparently a single leaf on either side, in consequence
of each pair being doubled upon itself: palpn long and narrow :
foot tongue-shaped, rather large, flattened, and provided with
a byssal groove.
Shell oblong, nearly equilateral, finely striated lengthwise ;
right valve more convex than the left : epidermis fibrous :
himje furnished w^th a free plate or ossicle, which covers the
cartilage : muscular scars slight ; anterior oblong, posterior
roundish.
A link connecting the Pandoridae with the Anatinida,
having the same shape and pearly nature as the former,
and the peculiar hinge-process or ossicle of the latter
* Named after the late Mr. W. Lyons, an active British concliologist.