265 



fpecies, by the iingular ^nus or gutter in the upper part 

 of the outer lip. 



Buccinum coftatum. Da Cofta p. 128. t. S. f. 4. ^^^ 



Murex coftatus. Br. Zool. No. 100. t. 79 ? inner qua- Costatus. 



drangle upper left figure. 



Piilt. Cat. Dor/ft. p. 43. 



Don Br. Shells, iii. t, 91. 

 Murex truncatus. Turt. Lin. iv. p. 446. 



M. with fix taper volutions, furnifhed with eight or 

 nine elevated ribs, deRitute of any ftriee, and frequently 

 glofify : colour various ; fome are wholly of a deep pur- 

 pUfh-brown, or chocolate, or partly mixed with white ; 

 others yellowifh-white, with fine fpiral ftreaks of brown, 

 that look like (Iriae; and not unfrequently quite plain dull 

 white, but fuch muft be confidered as dead, and injured 

 fhells: aperture narrow, terminating in a canal, very lit- 

 tle more contra6led than the reft of the mouth, and is 

 nearly ftrait ; outer lip ufually thickened by a rib at the 

 back, the margin thin ; inner lip very little replicated. 

 Length three-tenths of an inch at moft ; breadth one-eighth. 



Da Costa fpeaks of this fpecies from Cornwall and 

 DevonJJiire. We alfo found it in both thofe counties, par- 

 ticularly at Falmouth in the former ; and at Biddeford bay, 

 and Salcomb bay, in the latter; but only alive in the laft 

 place. It is likewife met with on fome of the fandy fliores 

 o^ Seuth Wales, efpecially about Laugharne. 



M m Do6lor 



