Untitled

Proportionally wider than F. cinereus with fewer and larger
ribs and lines.-conrad, 1846. Manatee River.
Dimensions of figured specimen: Height, 20.7 mm.;
maximum diameter, 12.0 mm.
Figured specimen: U.S.N.M. 94298, living in Tampa
Bay, Fla.
Immature forms similar to the young of the Recent
U. perrugata from Sarasota Bay, Fla., have been tentatively
referred to Conrad's species, although the presence
of the West Florida Recent species in the Duplin
and Waccamaw of North Carolina is by no means established.
Distribution: North Carolina: Duplin marl ( ?) Fairmont,
Robeson County. Waccamaw formation, ( ?) Walkers Bluff on
the Cape Fear River, Bladen County; ( ?) Neills Eddy Landing,
3 miles north of Cronly, Columbus County.
Outside distribution: Pliocene, Caloosahatchee marl, Nashua,
Putnam County, Fla.; Caloosahatchee and Myakka Rivers, Fla.
Pleistocene, Orient, Hillsboro Bay, Hillsboro County; North
Creek, Manatee County, Fla. Recent, Cedar Keys to Key West
in less than 50 fathoms.
Urosalpinx suffolkensis Gardner, n. sp.
Plate 28, figure 9
Shell rather heavy, fusiform, ranging rather widely
in relative proportions. Aperture approximately hal£
the total height, in some shells a little more, in others
a little less. Whorls convex, obscurely tabulated, probably
about 6. Spire moderately elevated, tapering rather
abruptly to an acute apex. Surface heavily sculptured.
Axial costals approximately 10 on the later volutions,
evenly rounded, elevated, separated by narrower intercostals;
costals usually evanescent on the anal fasciole
and often toward the aperture. Spiral sculpture of
broadly rounded lirations minutely crenulated by the
incrementals, prominent alike upon the costal and intercostal
areas. Primaries about 16 on the body and canal
and 4 or 5 on the 1atel,' whorls of the spire. Secondaries
intercalated with a fair degree of regularity. Aperture
pyriform. Labrum evenly arcuate, its edge minutely
crenulate and transversely striated within in harmony
with the external secondaries. Labium gently excavated
at the base of the body whorl, thickened but not
plicate at the entrance to the anterior canal. Parietal
wall heavily washed with a callus that may almost completely
conceal the umbilical chink. Anterior canal
with proximate margins, short, recurved, and slightly
emarginate.
Dimensions of holotype: Height of imperfect specimen,
31.0 mm.; maximum diameter 15.8 mm.
Holotype: U. S. N. M. 325425.
Type locality : One mile northeast of Suffolk, N ansemond
County, V a. Yorktown ;formation.
All of the individuals in the material at hand exhibit
a grayish or brownish background that contrasts rather
strongly, especially in slightly weathered forms, with
the whiter spirals and the lining of the aperture.
PART 2. SCAPHOPODA AND GASTROPODA 225
Urosalpinw sutfolkens 's is separated from Muricopsis
floridana (Conrad) by the absence of a conspicuous
shoulder; the persisten e of the costals, almost, if not
quite, to the posterior su ure; and the lesser prominence
of both the axial and spiral sculpture. Urosalpinm
stimpsoni is larger an relatively lower, and is ornamented
with somewhat ore numerous but usually less
elevated axial ribs.
Distribution : Virginia : Y rktown formation, Three-fourths of
a mile above Yorktown a d at Yorktown, York County; llA,
miles north of Suffolk, 1m· e west of Suffolk and 1 mile northeast
of Suffolk, Nansemon County.
North Carolina: Yorkto formation 2% miles northwest of
Murfreesboro and llh miles above Murfreesboro on the Meherrin
River, Hertford County; 1 mile northwest of Galloway crossroads,
on the Tar River, itt County. Duplin marl, Natural
Well, 2 miles southwest of agnolia, Duplin County.
Superfa ily BUCCINACEA
Famil PYRENIDAE
Genus !TRELLA Risso
1826. MUrella Risso, Histo e naturelle des principales productions
de !'Europe eridionale, vol. 4, p. 247.
Type by subsequent desig ation (Cox, Rept. Paleontology Zanzibar,
Moll., p. 28, 1927) : itrella flaminea Risso=Murem scriptus
Linnaeus. Recent, in t e Mediterranean.
Shell dense, rather s all, fusiform. Spire elevated,
the whorls evenly taper ng. Protoconch small, smooth,
blunt, paucispiral. Sc lpture restricted to the feeble
striae which gird the illar and the anterior fasciole.
Aperture rather narro . Outer lip thickened a little,
feebly emarginate po teriorly; denticulate within.
Parietal wash moderat ly heavy. Pillar feebly rugose.
Anterior canal not defi ed, the fasciole little or not at
all expanded. Termina notch U-shaped, oblique.
The type of A.styris, group with which Mitrella has
been commonly confuse is Astyris rosacea Gould, a thin
shelled Arctic species; it differs from the dense shells
of Mitrella in the feebl convex whorls, the thin outer
lip, nonplicate within, he absence or obscure development
of the siphonal no ch directly in front of the suture
on the outer lip, and i the compressed margin of the
pillar.
The Recent represen atives in the warm and shallow
waters are of world-wi e distribution.
Mitre Ia lunata (Say)
•
Plate 0, figures 17, 18
1826. Nassa lunata Say, A ad. Nat. Sci. Philadelphia Jour., 1st
ser., vol. 5, p. 213.
1870. Astyris lunata (Say). Dall, Boston Soc. Nat. History
Proc., vol. 13, p. 2 2.
1890. Astyris lunata Say. Dall, Wagner Free Inst. Sci. Trans.,
vol. 3, pt. 1, p. 137.
Shell reddish-brown, wi h about six volutions ; whorls with
two revolving lines of di ated, sublunate, whitish spots, and
sometimes a third one at base; suture not deeply impressed;