62 
19. F. curtus. —The Short Fusus, pi. XXXVI. fig. 5, 6. 
Fusus curtus. Fleming, Brit. An. p. 353. Murex curtus . 
Sowerby, Min. Conch. II. p. 227, pi. 199, fig. 5. 
Shell ovate, ventricose; spire short, consisting of four ab¬ 
ruptly tapering volutions, terminating in a rather obtuse apex, 
with about twelve longitudinal, rounded, undulating ribs upon 
each volution; crossed by numerous, sharp, somewhat distant 
stria?, which become rather stronger on the base of the shell; 
aperture oval, a little pointed above and below, and ending in a 
short, slightly curved, and narrow canal; pillar lip slightly re¬ 
flected on the columella; outer lip thin, internally striated with 
elevated lines. 
The substance of the shell being thin, gives the costa? the appear¬ 
ance of concave undulations internally. 
Found in the Blue Clay, Flighgate Hill. 
20. F. echinatus. —The Spined Fusus, pi. XXXVI. fig. 
9, 10. 
Fusus echinatus. Fleming, Brit. An. p. 353. Sowerby, 
Min. Conch. II. p. 226, pi. 199, fig* 4, 4. 
Shell elongated, turrcted; spire long, consisting of five ven¬ 
tricose volutions, well defined by a deep suture; the whole shell 
covered with numerous, longitudinal, sharp ribs, crossed by re¬ 
mote, transverse, elevated, rounded stria?, which preserve their 
thickness in passing over the ribs, producing the appearance of 
elevated angular spines; aperture ovate, terminating in a short 
and slightly curved canal; inner lip not reflected on the pillar, 
and the stria? continued over the columella; outer lip a little 
thickened and striated internally. 
Found in the Crag at Malden. 
21. F. cancellatus. —The Latticed Fusus, pi. XXXVI. 
fig. 15, 16. 
Fusus cancellatus. Sowerby, Min. Conch. VI. p. 45, pi. 
525, fig. 2. 
Shell considerably elongated; spire long, consisting of five 
ventricose volutions, with a sharp apex; covered with acute, 
longitudinal, and transverse ribs, producing a beautiful cancel¬ 
lated appearance, with four or five rows of cells to each volu¬ 
tion, the whole intersections provided with short spines; aper¬ 
ture elongated, somewhat contracted above, and terminating 
below in a short, slightly curved, open canal; base of the beak 
even. 
Found in the Crag of Norfolk and Sutfolk. 
22. F. IIeywoodii.—H ey wood’s Fusus, pi. XXXVI. fig. 
13, 14. 
Murex Peruvianus, Sowerby, Min. Conch. V. p. 47, pi. 
434, fig. 1,1. 
Shell oblong-ovate ; spire about half the length of the shell, 
consisting of five or six subturreted, inflated volutions; general 
surface smooth, provided with fourteen or fifteen thin, laminated, 
elevated, longitudinal ribs, and several varices; aperture ovate, 
somewhat rounded above, and contracted below into a long, 
narrow, slightly twisted canal; inner lip smooth, slightly reflected 
on the columella; outer lip thin, a little produced above. 
Found in the Crag at Woodbridge. 
I have named this shell in honor of James I lev wood, Esq., of 
Aeresfield, Pendleton, a zealous and expert geologist. 
This is not the F. Peruvianus of Lamarck. 
Fusus. 
23. F. carinellus. —Sinall-Keeled Fusus, pi. XXXVI. fig. 
24, 25. 
Fusus carinella, Fleming, Brit. An. p. 353. Murex cari- 
nella , Sowerby, Min. Conch. II. p. 196, pi. 187, fig. 3, 4. 
Shell considerably elongated; spire rather short,consisting of 
six convex volutions, along the middle of which, as well as the 
body, there is a sub-carina, produced by one of the stria?, which 
is more prominent than the others; whole shell with many lon¬ 
gitudinal ribs, crossed by numerous, strong, elevated, unequal, 
spiral stria?; aperture oblong-ovate, rounded above, somewhat 
contracted below r , and terminating in a long, nearly straight, 
open canal; inner lip narrowly reflected on the columella above, 
widening as it descends, and ending in a sharp point at the 
base; outer lip thin, even, and with the striae shining through, 
from the thinness of the shell. 
Found in the London Clay at Barton Cliff. 
24. F. ficulneus. —The Fig-like Fusus, pi. XXXV. fig. 
8 , 9* 
Fusus ficulneus. Sowerby, Min. Conch. III. p. 166,* pi. 
291, fig* 7, 7* Fleming, Brit. An. p. 352. Murex turgidus , 
Brander, Foss. Ilant. p. 26, pi. 4, fig. 56. 
Shell ovate, sub-fusiform, ventricose; spire short, consisting 
of five slightly rounded volutions, flattened at top, and termi¬ 
nating in a sharp apex, with many longitudinal, depressed ribs; 
the margin of the depressed portions of the volutions is fur¬ 
nished with a row of more or less acute tubercles, and in some 
instances double, beneath which the space is concave, and from 
whence the costae cminate; base and part of the beak provided 
with pretty strong, transverse stria?; aperture oblong-ovate, a 
little pointed above, and ending below in a short, oblique, rather 
wide canal; inner lip broadly reflected on the columella above, 
narrower below, and with a single plait near its base; outer lip 
expanded, and even on the edge. 
Found in the London Clay at Ilordvvell Cliff. 
25. F. BUL13IFORMIS—The Bulb-shaped Fusus, pi. XXXV. 
fig. 12, 13. 
Fusus bulbiformis. Sowerby, Min. Conch. III. p. 165, pi. 
291, fig* 1 to 6. Fleming, Brit. An. p. 352. Murex Bulbus , 
Brander, Foss. Ilant. p. 27, pi. 4, fig. 54. Murex Pi/rus, lb. 
p. 27, pi. 4, fig. 52, 53. Fusus bulbiformis , Lamarck, Env. de 
Paris, 62. 
Shell ovate, ventricose, nearly smooth; spire mucronated, 
very short, about a sixth of the whole length of the shell, con¬ 
sisting of six volutions, ending in a short apex; aperture oblong- 
ovate, contracted above and below, and terminating in a short, 
slightly curved canal; inner lip smooth,broadly reflected on the 
columella, with a slight protuberance inside near the top, which 
produces a subcanaliculate depression above the upper angle of 
the aperture; outer lip thick, smooth, and sharp on the edge; 
beak with obsolete stria?. 
Found in the London Clay at Ilordvvell, and the New Forest, 
Hampshire. 
This shell is subject to several varieties: 
<i. With the pillar lip plaited within. 
ft. Spire more elevated, and beak more produced, than in the 
variety described, which is the type of the species, with a concave 
furrow' at the upper part of each volution. 
7- Spire considerably produced; shell longer than in the type; 
volutions subventricose, with a deep, rounded, obtuse canal on the 
upper part of each volution of the spire. 
MOLLUSCA. 
