S$ MUREX. ROCK-SHELL. 



junction. A variety is sometimes found with ferruginous 

 marks or zones. 

 On most rocky shores, v. v. 



3. Murex carinatus. Carinated Rock-shell. 



Pennant, pi. 80, and frontispiece to vol. iv. Donovan, 

 pi. WJLaskey, Wern. Soc. i. pi. 8. f. 9. 



Shell strong, oval, dull yellowish white : spires seven, 

 the first very much inflated and covering more than half 

 the shell, faintly striate transversely, with a few irregular 

 longitudinal lines, giving them an imperfectly reticulate 

 appearance ; the upper part of each rather suddenly sloping 

 to the next, causing them to be very distinctly defined by 

 the line of separation j the four first with two distinct ele- 

 vated ridges winding round the middle, and which gradu- 

 ally disappear in the smaller volutions : aperture wide oval, 

 ending in a slightly reflected open canal ; inside pale yel- 

 lowish-white - 3 the outer-lip very thin and slightly notched 

 by the striae on the back , inner-lip smooth, folding back on 

 the body volution, rugged on the outside: length nearly 

 three inches : breadth one and a half, 



The description was taken from a fine specimen, in the 

 cabinet of Mr. O'Kelly of Dublin, who found it at Portmar-* 

 nock, in Dublin bay. v. m, 



4. Murex subantiquatus. Lesser smooth Rock-shell. 

 Murex antiquus. Donovan, pi. 119. 



Shell oblong, pale brown, coarse, rugged and somewhat 

 angular : spires eight, strongly striate transversely, and 

 faintly in a longitudinal direction, with one or two strong 

 undulate or slightly tubercled transverse ridges, which dis- 

 appear on the terminal volutions : aperture oval ; the outer- 

 lip dilated ; pillar-lip a little reflected ; inside livid white ; 

 the canal elongated : length nearly four inches ; breadth 

 &bout two. 



In Scotland : very rare. 



5. Murex antiquus. Greater smooth Rock-shelL 

 Lister, pi. 913. f. 4 Da Costa, pi. 6. f. 4 Pennant, 



pi. 81- Dom* Cat. pi. 17- f. 4. 



Murex 



