LITTOBINA.— Plate VIII. 



lower part ; fawn-colour, ribs sometimes stained with 

 livid-pui-ple, shining ; aperture rather contracted. 



Philippi, Pro. Zool. Soe. 1845, p. 142. 



Hab. North coast of New Holland. 



Characterized very distinctly by its broad, shining, flat- 

 tened ribs, which are sometimes of a purplish-Uvid hue, 

 and intervening grooves. 



Species 40. (Miis. Cuming.) 

 LiTTORiNA STRIATA. Litt. testd Mreviato-conicS , venlri- 

 cosd, imperforatd, acuta, atifractibus (kclivi-cotivexis, 



obesk, spiraliter sulcaiis ei liratis; sordide cinereo- 

 uigricante ; columella laiissime excavatd, fusco tinctd. 



The striated Littorina. Shell shortly conical, ventri- 

 cose, imperforated, sharp, whorls slantingly convex, 

 stout, spirally grooved and ridged ; ash-black ; colu- 

 mella vei-y broadly excavated, stained with brown. 



King, Zool. Journ. vol. v. p. 34.5. 

 LMorirta Canariends, D'Orbigny. 

 Littorina arenica, Nuttall. 



Hab. West Africa, Azores, and Canary Islands. 



A stout, strongly linear-grooved, adust shell, with the 



columella against the body-whorl very broadly excavated. 



