50 



never have feen it, and confidered it as a variety of the 

 Enjis in a young ftate. The pellucidus is not much more 

 than one tliird as broad as that (hell in proportion to its 

 length ; it alfo differs in the hinije. We have found it in 

 Cornwall, and have received it from Sandzvich. Mr. Pen- 

 nant found it to inhabit Red Wharf, Anglefea. It is 

 however a rare fpecies. 



J.EGUMEN. Solen Legumen. Lin. Syji. p. 1114. — GmeJ. Syjl. p. 3224.4. 



Br. Zocl. t 4(j. f. 24. 

 Lijler Conch, t. 420. f. 264. 

 Chem. Conch, vi. t. 5. f. 32. to 34. 

 Don. Br. Shells, ii. t. 53.— Az Cojta. p. 23S. 

 GauJi. t. 91. r. A.— Tart. Lin. iv. p. ISI. 



S. with a flraight, oblong, fub-oval (liell, tliin and fub- 

 pellucid; colour white, but niollly covered with a yel- 

 lowifli epidermis, and wrought with fine concentric llricc : 

 liinge near the middle, furniflied with two fmall teeth in 

 one valve, receiving a fingle one from the oppofite ; with 

 a hook-like procefs in each valve, pointing towards the 

 cartilage. This fpecies is mentioned as rare, or at Icaft 

 very local by feveral authors, and not to exceed two 

 inches and a half in breadth. We have found it on tlie 

 coart of CaermarthenJJiirc, nearly an inch long, and fcjur 

 inches broad; and verv little inferior in hze in Biddejord 

 hay, on the coafl: of north Devon, where it is in great 

 abundance, and by far the moft common fpecies. 



Mr. Pen- 



