Fusus. 
MOLLUSCA. MURICIDJE. 
351 
Length 4 lines, breadth 1 line ; yellowish-white, with an obsolete brown 
band (consisting of four coloured lines) on the middle of the body-whorl, con- 
tinuing to the apex ; the ribs are highest at the middle of the whorl ; aper- 
ture oblong ; canal short. — This species is frequently to be met with among 
•West Indian shells. 
343. F. gyrinus , — Whorls four, with numerous spiral rows 
of brown tubercles. 
Murex gyr. Mont. Test. Brit. Sup. 170. Laskey., Wern. Mem. 401. 
t. viii. £ 10. — Frith of Forth, Mr Laskey. 
Length fths, breadth |th of an inch ; brown ; strong, short, conic, and tu- 
mid ; eight rows of tubercles on the body-whorl, and three on the preceding 
one. 
344. F. purpureus . — Whorls ten, tapering ; ribs twenty, 
oblique, with sharp spiral ridges. 
Murex purp. Mont. Test. Brit. 260. t. ix. f. 3 — In deep bays, rare. 
Length fths of an inch, breadth |ths ; purple ; apex pointed ; the spiral 
ridges are numerous, rising into angles on the ribs, giving the shell a very 
rough appearance ; aperture narrow, oval, terminating in a strait canal ; out- 
er lip thin ; pillar obliquely striated, and somewhat tubereulated. 
345. F. Whorls seven, tapering, ribs numerous, 
crossed by strong raised spiral striae ; canal slender, long. 
Murex mur. Mont. Test. Brit. 262. t. ix. f. 2 — In deep water, rare. 
Length | an inch, breadth | ; epidermis red, shell white or flesh coloured ; 
aperture oval, outer lip sharp, crenulated within ; pillar smooth. 
346. F. Whorls five, with fifteen wire-like ribs, 
continuous, and bending in the middle towards the outer lip ; 
spirally striated. 
Murex chordula, Turt. Conch. Diet. 94.— In drifted sand, Dublin Bay. 
Length 2 lines, breadth |ds less ; brown ; conic ; a little tapering to a ra- 
ther obtuse point ; whorls rounded, the first occupying more than half the 
length ; aperture narrow, oval, ending in a short canal ; outer lip thickened 
by a rib on the back. 
347. F. Barvicensis . — Shell ventricose, white, with longi- 
tudinal furbelowed ribs, continued obliquely across a flattened 
space at the sutures ; beak rather long, slightly ascending.” 
Dr Johnston., Edin. Phil. Journ. vol. xiii. 221. — Sea coast, near Berwick. 
“ Shell white, half an inch long, and one-half as broad, with six whorls, di- 
vided by a flattened space, and longitudinally ribbed. There are thirteen 
ribs on the body-whorl, finely furbelowed, projecting a little at the suture, 
terminating on the beak, Avhich is produced and smooth towards its extremi- 
ty. The indented appearance of the ribs is produced by obsolete transverse 
striae crossing them. The ribs do not terminate at the sutures, but are con- 
tinued across by elevated striae. Aperture round, inclining to oval, with 
smooth lips. 
348. F. .Whorls six, aperture rounded, canal pro- 
duced and bent. 
