183 



That this fliell has been found on other parts of the 

 Briti/h coafl, of a fmall fize, is undoubted; for we have 

 feen it in more cabinets than one, confounded with ihe 

 P. pe6linata: and we are partly incHned to believe the 

 figure of the P. fragilis in the Bntifh Zoology, was taken 

 from a fmall fhell of this fpecies ; by its fuperior breadth, 

 and being deflitute of fpines. 



3. ■ 

 Pinna muricata. hin. Syft. p. 1 160. — GmeL Syjl. p. 3364. 4. Muricata. 

 Chetn. Conch, viii. t. 87. f. 769. Tab. 5. f. 3. 



Gualt. 79. B ^—Pult. Cat. Dorjct. p. 39. 

 Turt. Lin. iv. p. 301. 



P. with a thin, brittle, femi-pellucid, fleni-coloured 

 fhell, darkeft at the fmallerend: with ten or twelve broad 

 ribs running longitudinally the whole length, and a few 

 intermediate fmall ones at the narrow end; befet fparingly 

 ■with concave prickles towards the larger end, generally 

 at the extremity: the hinge fide is quite flrait ; oppofite 

 fide a little inflexed, and not fo long: rounded at the 

 gaping end. 



Doftor PuLTENEY, who favoured us with a fpeci- 

 men of this fpecies, from the coaft of DorfetJIiire, for the 

 P. muricata of Linnaeus, fays, it has been dredged up 

 at Weymouth ; and that it is five or fix inches long, by two 

 or three wide. Our fpecimen was only four inches long. 

 Young fhells are nearly fmooth, and defiitute of fpines. 



This 



