Dolium. 
MOLLUSCA. 
51 
internally striate, the striae terminating a little way from the 
edge ; beak straight, short, truncated, and expanded into a 
wide canal in front. 
Found at Plumstcd. 
13. B. propinquum.—T he Kindred Buccinum, pi. XXXII. 
fig. 31, 32. 
Buccinum propinquum, Sowerby, Min. Conch. V. p. 121, 
pi. 477j fig. 2. Fleming, Brit. An. p. 345. 
Shell oblong-ovate, acute, with six rapidly decreasing 
deeply divided volutions, ending in a sharp apex, covered 
with numerous strong longitudinal ribs, and crossed by many 
transverse deep sulci, giving the whole surface a tuberculated 
appearance; the upper sulci very broad, producing a sub¬ 
coronated aspect on the upper margin of the volutions; 
aperture nearly circular; columella smooth, and broadly 
reflected in the front above, and narrowed below ; outer lip 
even on the edge ; length six-eighths of an inch ; breadth 
more than three-eighths. 
Found in the Suffolk Crag. 
14. B. Leathf.su. — Loathes’ Buccinum, pi. XXXII. 
fig. 28. 
Buccinum sulcatum . Sowerby, Min. Conch. V. p. 122, 
pi. 477, fig- 4. 
Shell oblong-ovate, consisting of five, slightly defined, 
nearly flat volutions, terminating in an obtuse apex ; covered 
with strong, wide-set, transverse, strico ; aperture elongated, 
somewhat narrowed above ; outer lip plain on the margin, 
and toothed internally ; length six-eighths of an inch ; breadth 
not three-eighths. 
Found in the Suffolk Crag. 
15. B. labiosum. —The Gross-lipped Buccinum, pi.XXXII. 
fig. 37, 38. 
Buccinum labiosum. Sowerby, Min. Conch. V. p. 122. 
pi. 477, fig. 3. Fleming, Brit. An. p. 345. 
Shell oblong-ovate, consisting of seven volutions ; spire 
tapering rapidly, and terminating in an acute apex ; sides of 
the volutions somewhat flattened, and slightly separated; 
covered with fine transverse sulci, from ten to twelve on 
each volution, in some instances more ; aperture oblong- 
ovate, slightly narrowed above ; pillar lip broadly reflected 
on the columella above, and contracting as it descends ; outer 
lip smooth and thin; length six-eighths of an inch. 
Found in the Suffolk Crag. 
16. B. elegans. — The Elegant Buccinum, pi. XXXII. 
fig. 35, 36. 
Buccinum elegans . Sowerby, Min. Conch. V. p. 121, 
pi. 477, fig. 1. 
Shell subconic, acuminated, consisting of seven ventricose, 
deeply defined volutions, and terminating in an acute apex ; 
with longitudinal, rounded, prominent ribs, and crossed by nine 
or ten sharp, distant, elevated stries; aperture slightly ovate ; 
pillar lip smooth ; outer lip toothed within. 
Found in the Suffolk Crag. 
17. B. spinosum. — The Spined Buccinum, pi. XXXII. 
fig. 24, 25. 
Buccinum spinosum. Sowerby, Min. Conch. V. p. 128, 
pi. 566, fig. 5, 6. 
Shell conical, elongated, subturreted ; each volution 
invested by a sharp spiral furrow, above which is a con¬ 
tinuous series of large, blunt, tubercular spines, with a row 
of smaller ones at the base ; aperture semiovate ; columella 
smooth ; beak somewhat produced. 
Found in the Carboniferous or Mountain Limestone of 
lorquay and Newton Bushel, Devonshire. 
18. B. unilineatum. — The One-Lined Buccinum, 
pi. XXXII. fig. 8, 9. 
Buccinum unilineatum. Sowerby, Min. Conch. V. p. 140, 
pi. 486, fig. 5, 6. 
Shell elongated, consisting of six volutions, with straight 
sides, and gradually tapering to a rather obtuse apex; eacli 
volution with a single linear furrow close to its upper edge ; 
body rather ventricose ; the whole covered with very fine 
spiral strife ; aperture obliquely elongated, narrow, and 
straitened at both extremities ; beak short; columella smooth ; 
outer lip thin ; length not three-eighths of an inch ; breadth 
half its length. 
Found in the Limestone at Ancliff. 
19. B. PARALLEL!!.— The Parallel Buccinum, pi. XXXII. 
fig. 30. 
Buccinur/k par allele. Phillips, Geo. of York. II. p. 229, 
pi. 16, fig. 8. 
Volutions slightly inflated, and well defined by the suture, 
spirally striated, their upper portions plane, the lower por¬ 
tions convex with many equal spiral furrows. 
Found in the Mountain Limestone at Bolland, Queen’s 
County, Ireland. 
Genus XII.—DOLIUM.— D 9 Argenville. 
Shell suboval, extremely ventricose, thin, sometimes 
subglobose, frequently transversely costated, or sul- 
cated; spire short,* aperture very large, provided with a 
short reflected canal ; outer lip generally thin, in some 
instances a little thickened, reflected and crenated at 
the margin ; external surface generally covered with a 
thin, horny epidermis. 
1. D. nodosum. — The Nodulous Dolium, pi. XXXIII. 
fig. 9, 10. 
Dolium nodosum. Sowerby, Min. Conch. V. p. 34, 
pi. 426 and 427. A cast of a species of Dolium, Mantel!, 
Geo. Sussex, p. 196. 
Shedl ovate, ventricose ; spire depressed, consisting of three- 
volutions, and having spiral-rounded belts, crossed by a few 
wide-set, longitudinal stria?, ending in a flattened apex ; 
whole shell provided with numerous transverse rows of large 
and somewhat flattened knobs, with intervening sulci. 
Discovered in the Chalk at Clayton Pit, by Richard 
Weeks, Esq. 
Genus X 111.— P U R P UR A .—Bruguiere. 
Shell generally ovate or oblong ; spire short, mostly 
grooved, granose, or tuberculate, or externally spinose; 
aperture generally largely dilated and ovate; margin of 
the cuter lip usually sharp, and frequently toothed 
within, near the edge ; emarginate at the base, where it 
is notched, and ending in a short canal; columella gene¬ 
rally depressed, often internally acute at the edge, and 
terminating below in a sharp point; operculum horny, 
provided with a lateral nucleus, thinner on the margin 
next the columella. 
