Fusus. 
MOLLUSCA. 
63 
26. F. sig mi lin i at us.—The Sigmi-lined Fusus, pi. XXXV. 
fig. 11. 
Buccinum sigmilineum. Phillips, Geo. of Yorkshire, II. p. 
230, pi. 16, fig. 12. 
Shell elongated; spire rather lengthened, consisting of six or 
seven ventricose volutions; whole shell covered with sigmoidal 
striae; aperture oblong-oval, ending in a short, nearly straight 
beak ; outer lip rather thin, and even. 
Found in the Mountain Limestone at Bolland and Kildare, 
Queen's County, Ireland. 
27. F. contuaiuus. —The Reversed Fusus, pi. XXXV* 
fig. 10. 
Fusus contrarius. Fleming, Brit. An. p. 253. Lyell’s Fits, 
of Geo. p. 303, f. 129. Murex contrarius , Sowerby, Min. 
Conch. I. p. 63, pi. 23. 
Shell elongated, fusiform, reversed; spire consisting of five 
or six hetrostrophe, rather ventricose volutions; whole shell 
generally with numerous, rounded, spiral stria? (and in some 
instances smooth); aperture oblong placed on the right side, 
a little pointed above, and terminating below in a short, slightly 
bent, open canal; inner lip broadly reflected on the columella; 
outer lip somewhat thickened, and expanding. 
This species is sometimes met with upwards of four inches and a 
half in length. 
Found in the Suffolk Crag, See. 
28. F. alveolatus. —The Checqucrcd Fusus, pi. XXXVI. 
fig. 27, 28. 
Fusus alveolatus. Sowerby, Min. Conch. VI. p. 45, pi. 525, 
fig. 1. 
Shell turreted, much elongated ; spire consisting of six or 
seven volutions, obliquely flattened above; the whole shell pro¬ 
vided with thick, straight, rounded, longitudinal ribs, crossed by 
two obtuse, spiral ribs on the volutions of the spire, and with 
six or seven on the body, which gradually diminish in thickness 
as they descend upon the beak; the intervals between the ribs 
presenting series of square and deep cells; aperture nearly 
round, contracting towards the canal below, which is close and 
narrow; inner lip smooth, broadly reflected on the columella, 
and descending to the base of the canal; outer lip plain, and 
even on the edge; beak half cylindrical in its form. 
Found in the Suffolk Crag. 
2Q. F. longjevus.—T he Lengthened Fusus, pi. XXXV. 
fig. 14. 
Fusus longevous. Sowerby, Min. Conch. I. p. 141, pi. 63. 
Fleming, Brit. An. p. 352. Murex longcevus, Brander, Foss. 
Hant. p. 22, pi. 2, fig. 40, pi. 6, fig. 73, and pi. 8, fig. 93. 
Shell ventricose, smooth; spire consisting of eight or nine 
abruptly tapering, turreted volutions, flattened above, with 
several knobs on the lower volutions, which extend to the 
body, and terminate on the upper and inner margin of the 
outer lip, where they are about half an inch in length, and 
the same distance apart; aperture nearly circular, contracting 
below into a long, nearly straight, narrow canal, which is a 
little curved near the base; inner lip smooth, broadly reflected 
on the columella, and suddenly contracted as it approaches the 
canal, continuing a mere line to the base of the beak, which 
is about the same length as the spire; outer lip thin, and even 
on its edge. 
In the young state, the tubercles are nearly obsolete, and with 
some transverse striae upon the upper volutions. The full grown 
shell is from seven and a half to eight and three quarter inches in 
length. 
Found at Hordweli and Barton Clifts, Hampshire; and also 
at Muddiford. 
30. F. POiutEC'rus.—The Elongated Fusus, pi. XXXV. 
fig. 17. 
Fusus porrectus. Fleming, Brit. An. p. 352. Fusus 
rugosus , Sowerby, Min. Conch. III. pi. 274, fig. 8, 9. Murex 
porrectus, Brander, Foss. Hant. p. 21, pi. 2, fig. 35. 
Shell much elongated, and narrow; spire consisting of twelve 
or thirteen inflated volutions, well defined by the suture; whole 
shell covered by numerous, prominent, longitudinal ribs, each 
crossed by eight or nine fine, sharp, elevated stria?, producing a 
rough appearance on the surface ; aperture subovate, contract¬ 
ing as it descends, and ending in a long, narrow canal; inner 
lip smooth, rather broad above, and continuing to the base of 
the lengthened, nearly straight beak ; outer lip thin. 
Found in the London Clay at Ilordwell. 
31. F. acuminatus —The Accumulated Fusus, pi. XXXV. 
fig. 22. 
Fusus acuminatus. Sowerby, Min. Couch. III. p. 131, fig. 
1 , 2, 3. Fleming, Brit. An. p. 352. Murex porrectus y Bran¬ 
der, Foss. Hant. pi. 2, fig. 36. 
Shell much elongated, acicular; spire consisting of eight or 
ten ventricose volutions; the whole shell provided with many 
depressed, nearly obsolete, irregular, longitudinal ribs, crossed 
by numerous, elevated, spiral stria?; aperture oblong-ovate, con¬ 
tracting beneath into a narrow, lengthened canal; inner lip nar¬ 
rowly reflected on the columella; outer lip expanded, and even 
on the edge. 
Found in the London Clay at Ilordwell. 
32. F. asper. —The Rough Fusus, pi. XXXV. fig. 18. 
Fusus asper. Sowerby, Min. Conch. III. p. 131, pi. 274, 
fig. 4, 5, 6, 7- Fleming, Brit. An. p. 352. 
Shell much elongated ; spire consisting of six or seven ven¬ 
tricose volutions, terminating in an acute apex; whole shell with 
numerous, longitudinal, rather depressed ribs, which do not 
extend to the beak; crossed by four or five elevated, sharp, 
tuberculatc Edges, which are most conspicuous as they pass 
over the costae, and especially on the upper volutions; aperture 
oblong-ovate, narrowing as it approaches the canal, which is 
very long, and contracted ; inner lip slightly reflected on the 
columella; outer lip thin. 
Found in the London Clay at Ilordwell Cliff. 
33 . F. Haiipulus _The Littic-Ilarp Fusus, pi. XXXVI. 
fig. 31, 32. 
Murex Harpula. Sowerby, Min. Conch. VI. p. 152, pi. 
578, fig. 5. 
Shell oblong-ovate; spire short, consisting of five depressed, 
somewhat square volutions, terminating in a sharp apex; with 
numerous, close, thin, oblique, longitudinal ribs, which increase 
in number towards the base, from intervening shorter ones; 
aperture almost orbicular, ending in a nearly straight canal. 
Found in the Carboniferous Limestone at Bradley. 
