Fusus. MOLLUSCA. MURICID.E. 351 



Length 4 lines, breadth 1 line ; yellowish-white, with an obsolete brown 

 band (consisting of four coloured luies) 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. gyr'mus. — Whorls four, with numerous spiral rows 

 of brown tubercles. 



Murex gvr. Mont. Test. Brit. Sup. I70. Laskey, Wern. Mem. 401, 

 t. viii.t: 10 — Frith of Forth, Mr Laskey. 

 Length |ths, 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 tuberculated. 



345. F. mur'icatus. — Whorls seven, tapering, ribs numerous, 

 crossed by strong raised spiral striae ; canal slender, long. 



IVIurex mur. 3Iont. Test, Brit. 2G2. t. ix. f. 2 — In deep water, rare. 

 Length h an inch, breadth \ ; epidermis red, shell white or flesh coloured; 

 aperture oval, outer lip sharp, crenulated within ; pillar smooth. 



346. F. chorclula. — 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. Barvkensis. — " 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, v/ith six whorls, di- 

 vided by a flattened space, and longitudinally i-ibbed. There are thii'teen 

 ribs on the body-whorl, finely furbelowed- projecting a little at the suture, 

 terminating on the beak, which is produced and smooth towards its extremi- 

 ty. The indented appearance of the ribs is produced by obsolete transverse 

 strice crossing them. The ribs do not terminate at the sutures, but are con- 

 tinued across by elevated strite. Aperture round, inclining to oval, with 

 smooth lips. 



348. F. Bamfms. — Whorls six, aperture rounded) canal pro- 

 duced and bent. 



