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CHIONE MAZYCKII, new species.
Plate XIII, fig. 2.
 Shell
small, subrostrate, with low distant concentric lamellate crossing
flat radial ribs, those radials in front of the middle later
becoming double, while the ribs behind the middle remain single; all
the ribs are separated by subequal smooth interspaces except near
the anterior margin, where interstitial threads appear; the
concentric lamellae become laminate, especially on the right valve,
near the posterior end; lunule distinct, lanceolate, striated;
escutcheon defined by a keel, striated, the right half somewhat
overlapping the other, painted with brown streaks or entirely brown;
disk. white with pale-brown or rose-colored radial bands and
occasional darker-brown flecks; interior rose color with white near
the end and basal margins; hinge normal, with a rose-colored ray
below a very short ligament; pallial sinus very small and blunt,
inner margins crenulated. Length, 14.2; height, 11.2; diameter, 8
mm.
Type locality - United States Fish
Commission station 2616, off Cape Fear, North Carolina, in 17
fathoms, sand. Cat. No.92022, U. S. N. M.
This pretty little species is easily discriminated by its
form and color from C. cancellata at any stage of growth. It
is named in honor of Mr. W. G. Mazyck, of Charleston, South
Carolina. |
