35S MOLLUSCA. MURICID^. Fusus. 
Murex Bamf. Don. Brit. Shells, t. clxix. f. i. Mont. Test. Brit. Sup. 
117 — Sandy bays. 
Length about |ths of an inch, breadth upwards of ^th ; white, or rufous ; 
whorls rounded, with numerous transverse plaits, which, in young shells, are 
raised and sharp, especially at the separating line ; in some cases there are 
indistinct spiral ridges ; outer lip rounded, inner lip concave ; base attenuat- 
ed ; canal slightly turned to the left. 
EXTINCT SPECIES. 
1 . F. longmvus.-—'V entricose, smooth, spire turrited, with a few large knobs 
upon the upper part of the latter whorls ; beak as long as the spire, slightly 
curved near the end — (Murex longsevus, Brander.) f. 40, 70. and 93.) Sower. 
Min. Conch, t. Ixiii. — In London Clay. 
2. F. Elongated, rugosely reticulated ; whorls keel-formed ; 
base produced — Sower. Min. Conch, t. ccxxviii.— In London Clay. 
3. F. acuminatiis — Elongated, acicular, obscurely costated, and longitudi- 
nally striated ; whorls tumid, with eight or ten elevated strise — (Murex por- 
rectus, Brander.) f. 86.) Sower. Min. Conch, t. cclxxiv. f. 1, 2, 3 — London 
Clay. 
4. F. asper — Elongated, costated ; whorls tumid ; costje decussated by 
four or five elevated, rather acutely knotted, strije or ridges — Sower. Min. 
Conch, t. cclxxiv. f. 4-7 - — London Clay. 
5. F porrectus. — Elongated, subcancellated, with many prominent costse ; 
volutions tumid, with about eight elevated strise upon each — (M. porrectus, 
Brander., f. 35.) Sower. Min. Conch, t. cclxxiv. f. 8, Q.-— London Clay. 
6. Y . lulUformis — Ovale, ventricose, nearly smooth ; spire mucronated; 
beak obscurely striated, ^gently curved. — (Murex bulbus, f. 54. and M. Py- 
rus, f. 52, 53. Brander.') Sower. Min. Conch, t. ccxci. fl 1-6 — London Clay. 
7. T . ficulneus. — Ovato-fusiform, turgid, costated ; whorls subspinose above; 
base striated; baek twisted; pillar uniplicated. — (Murex herzedus, Brander.^ 
f. 51.) — Sower. Min. Conch, t. ccxci. f. 7 * — London Clay. 
8. F. errans — Oblong-ovate, conical at both ends, transversely striated ; 
whorls bicarinated ; upper carina largest. — (Strombus errans, Brander., f. 42.) 
— Sower. Min. Conch, t. cccc — London Clay. 
9. F. regularis — Rather elongated with many longitudinal undulations, 
crossed by strong elevated strise; whorls convex, the last contracted to- 
wards the beak, open, rather slender; aperture obovate — (M. antiquus, 
Brander., f. 74.)— Sower. Min. Conch, t. clxxxvii. f. 2, and t. ccccxxii. f. 1 — 
London Clay. 
10. F. complanatus Ovato-fusiform; pointed, costated, and transversely 
striated ; superior edges of the whorls elevated, and pressed upon the spire ; 
strise contiguous ; pillar curved — Sower. Min. Conch, t. ccccxxiii, f. 2, 3. — 
London Clay. 
11. F. Lima. — Ovato-fusiform, pointed, carinated ; upper edges of the 
whorls elevated, and pressed upon the spire ; carinse many, acute, the cen- 
tral ones decussated by small sharp costse ; lines of growth acute. — Sower. 
Min. Conch, t. ccccxxiii. f. 4 . — London Clay. 
12. Y. coniferus. — Elongated, with many longitudinal undulations ; cros- 
sed by numerous unequal elevated strise ; whorls few, inversely conical, their 
upper parts depressed, and nearly smooth ; beak open, rather short, aperture 
ovate.— iS'ower. Min. (3onch. t. clxxxvii. f. 1.— Clay. 
