Pvn H,i I'UitlS

CIRCE. 321
by the trivial name of the " brown circular-furrowed
northern Cockle." Fleming justly remarked that this
descriptive epithet f seems somewhat different from the
usual provincial appellations." Lamarck has given an-
other equally extraordinary habitat for this species, viz.
" Cotes de France, a Cherbourg."
Genus IV. CIRCE *, Schumacher. PL VI. f. 4.
Body suborbicular, compressed : mantle rather thick ; edges
denticulated : tubes very short ; the larger or incurrent one
bag-shaped, and the other sessile and scarcely
the shell ; orifices fringed ; foot proportionally large.
visible outside
Shell rounded or triangular, compressed, concentrically
but slightly furrowed : epidermis thin : beaks prominent, not
much recurved : lunule distinct, lanceolate : corselet narrow :
ligament partly external and partly
concealed within the corse-
let : teeth, in each valve three diverging cardinals, the outer
one on the posterior side in the left valve cloven lengthwise,
so as to resemble two ; laterals, one on the anterior side in the
right valve, and two on the same side in the left valve : scars
inconspicuous.
his '
The genus Circe was constituted by Schumacher in
Essai d'un nouveau svsteme des habitations des
vers testaceV ; and the diagnosis and further description
which he gave are so explicit, that I have no doubt
it w T ould include the British shell described bv Mon-
tagu as Venus minima, and its variety ( V. triangularis of
the same author), and placed by subsequent writers in
the genera Cytherea and Cyprina. The deceased Pro-
fessor C. B. Adams (whose memory is deservedly che-
rished by his brother naturalists in the United States
as an assiduous conchologist) proposed another genus,
having similar characters, with the name of Gonldia, in
honour of his equally distinguished fellow-countryman ;
* A Sea-Nymph and noted sorceress.
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