PLATE CLVIII. 



FIG. I. II. 

 ARCA NOAE. 



nosh's ark shell. 



GENERIC CHARACTER. 



Shell bivalve, valves equal : teeth at the hinge numerous, acute,- 

 and inserted between each other. 



SPECIFIC CHARACTER. 



Shell oblong, striated, at the apex emarginated : beaks very remote : 



margin gaping. 



Arca Noae : testa oblonga striata apice emarginata, natibus remo- 

 tissimis, margine hiante. Linn. Gmel. Syst. 

 Nat. T. 1. p. 6. p. 3306. sp. 2. 



Musculus Matthioli. List. t. 368. 



Concha rhomboides, Rondel. 99. 2. p. 27. 



Bonanu. rear. 2. f. 32. 



Miss Pocock, whose liberal communication of British shells col- 

 lected by herself, we have had such frequent occasion to mention in 

 the progress of this publication, has obliged us with a small specimen 

 of the Arca Noae found on the shores of Cornwall ; the smallest 

 shell figured in the upper part of our PJate. 



