44 
MOLLUSCA. 
Genus I.—CONUS.— Linnceus. 
Shell inversely conical, turbinate; spire generally 
short; aperture longitudinal, linear, entire, narrow, and 
effuse at the base; pillar smooth ; shape of a reversed 
cone; most of the species with a notch in the upper 
extremity of the outer lip, which, for the most part, is 
very straight, and sometimes, although seldom, slightly 
arcuated; always destitute of teeth; usually, if not 
always, covered with an epidermis, in a recent state. 
1. C. concinnus. — The Neat Cone, pi. XXX. fig. 1 and 
10. 
Conus concinnus. Sowerby, Min. Conch. III. p. 180, pi. 
302, fig. 2. Fleming, Brit. An. p. 330. 
Subfusiform, somewhat angular in the centre ; spire one- 
third the length of the shell, with small knobs, and fine 
granulated spiral striae; base a little produced, and provided 
with furrows, which are deepest towards the point; breadth 
equal to about a third its length. 
Found at Barton and Ilighgate Hill, London. 
2. C. dormitor.— The Long-sleep Cone, pi. XXX. fig. 
6, 7. 
Conus dormitor. Brander, Foss. Hant. Coll. fig. 24. 
Sowerby, Min. Conch. III. p. 179, pi. 301, fig. 2, 3, 4. 
Fleming, Brit. An. p. 330. 
Subfusiform short, tapering to both extremities ; with 
numerous, transverse, elevated striae, and the intermediate 
spaces finely crcnulated ; sometimes placed in pairs ; length 
of the spire about equal to the greatest diameter of the 
base; aperture extending more than half the length of the 
shell ; acute above ; outer lip rising gradually from the body, 
and considerably inflated in the centre, and narrowing the 
aperture. 
Found at Muddiford and Barton. 
3. C. cingili.us—T he Zoned Cone, pi. XXX. fig. 8. 
Conus dormitor . Variety, Sowerby, Min. Conch. III. pi. 
179. fig. 1. 
Subfusiform, tapering to both extremities, with transverse 
close striae, and the intervening spaces crenulated ; a smooth, 
broad band ornaments the upper part of the body ; aperture 
equal to half the length of the shell; and the spire a third 
its length. 
This differs from the C. dormitory in being less acute at 
the apex and base; in the outer lip being more inflated, the 
body swelling more in the centre ; in the transverse band ; 
and in being only half the size of the former. 
Found at Barton. 
4. C. scabiu use ulus. — The Rough Cone, pi. XXX. fig. 
2, 3. 
Conus scabriuscidus. Fleming, Brit. An. p. 330. 
C. scabriculus. Brander, Foss. Hant. Coll. fig. 21. 
Sowerby, Min. Conch. III. p. 180. pi. 303. fig. 1. 
Subfusiform, somewhat short, bulging in the centre, taper¬ 
ing towards both extremities, terminating in an acute apex, 
and in an obtuse base; with transverse, elevated, serrated, 
wide-set, compressed striae, which feel rough to the touch ; 
aperture more than half the length of the shell, straitened 
Oliva. 
above, and effuse at the base; outer lip rising gently from 
the body; arcuated and inflated in the middle. 
Sowerby says the right lip is sometimes plaited in the 
edge, but this we have not observed. 
Found in the London Clay at Barton. 
5. C. Hi giigaten sis. — The Highgate Cone, pi. XXX. 
fig. 4. 5. 
C. concinnus ? Sowerby, Min. Conch. III. pi. 302, fig. 1. 
Shell conical, rather smooth ; spire consisting of about six 
volutions, with indications of obsolete tubercles, and the 
centre of each volution furnished with a spiral canal; aperture 
narrow, two-thirds the length of the shell. 
Found in the London Clay at Ilighgate Hill. 
G. C. Bartonensis. —The Barton Cone, pi. XXX. fig. 9 
and 11. 
C. scabriculus . Variety ft Sowerby, Min. Conch. III. 
p. 180, pi. 303, fig. 2. 
Shell conical, elongated; spire and body abruptly tapering 
to a short point; spire not a third the length of the shell; 
surface covered with numerous close-set, minutely toothed, 
transverse striae; aperture contracted, and equal to two- 
thirds the length of the shell. 
Found in the Clay at Barton. 
Genus II. — OLIVA. — Bruguiere. 
Shell subcylindrical, convolute, smooth, and glabrous; 
spire short, with canaliculated sutures; above which 
the volutions are coated with a fine enamel; aperture 
elongated, rather narrow, emarginate at the base ; 
columella obliquely striated, or plaited, having a varix- 
like appendage. 
1. O. Branderi. — Brander’s Oliva, pi. XXX. fig. 18. 19. 
Oliva Branderi. Sowerby, Min. Conch. III. p. 159, 
pi. 288, upper figure. Fleming, Brit. An. p. 335. Voluta 
Ispidula, Brander, Foss. Hant. Coll. fig. 72. 
Shell oblong-ovate, smooth; spire produced, with four, volu¬ 
tions terminating in a somewhat pointed apex ; body ventri- 
cose ; aperture oblong ; outer lip thickened, inner lip plaited, 
and a little varicose near the base; diameter of body equal to 
half the length of the shell. 
Found in the London Clay, Hampshire. 
2. O. Salisbuhiana. — Salisbury’s Oliva, pi. XXX. fig. 
16, 17. 
Oliva Salisburiana. Sowerby, Min. Conch. III. p. J60, 
pi. 288, lower figures. 
Shell ovate, smooth, short, ventricose ; its diameter equal 
to two-thirds its length, the thickest part being near the 
upper margin of the body, from whence it is the shape of 
a reversed cone ; aperture oblong, somewhat contracted 
above, widened in the centre, and again becoming narrower 
at the base; both lips tumid above, separating the body 
from the spire, which is short, conical, consisting of four 
volutions, and ending in a pointed apex. 
Found in the London Clay. 
