244 ARCA. 



semblance to the auricles of a Pecten ; the summits are cen- 

 tral, incurved, and so approximated as almost to touch each 

 other. 



multistriata. 41. Shell ovate-sub-orbicular, ra- 

 ther compressed, with crowded longitudinal 

 and minute transverse striae ; margin very 

 entire. 



Area, multistriata. ForskaeVs Descrip. Anim. in Itin. p. 

 123. Chemnitz, vii. p. 240. t. 58. f. 673. Bruguiere 

 Erie. Meth. p. 118. 

 Area striata. Gmelin, p. 3308. 

 Area, No. 20. Schroeter Einl. iii. p. 287- 



Inhabits the Red Sea. Forskael. 



Shell about an inch long, and hardly eleven lines broad, of a 

 pale fawn colour, with transverse brown bands, and the in- 

 side is reddish ; the longitudinal striae are very numerous and 

 distinctly marked, and those which cross them transversely 

 are so minute as to be hardly discoverable without a glass ; 

 the valves become flattish towards the margin which is en- 

 tire, and this species may thereby be readily known. 



*** With the Teeth in a broken line. 



nucleus. 42. Shell somewhat triangular, smooth, 

 and the inside pearly ; apices recurved, and 

 approximated ; margin crenated. 



Area nucleus. Linnaus Syst. Nat. p. 1143. Pennant 

 Zool. iv. p. 98. Chemnitz, vii. p. 241. t. 58. f. 574. 

 Schroeter Einl. iii. p. 277- Gmelin, p. 3314. Donovan, 

 ii. t. 63. Montagu Test. p. 141. Maton and Racket, 

 in Lin. Trans, viii. p. 95. Dorset Cat. p. 37- t. 12. f. 

 6. Brooks's Int. p. 73. t. 3. f. 36. 



Area margaritacea. Bruguiere Enc. Meth. p. 109- 



Nucula margaritacea. Lamarck Syst. des Anim. p. 115. 



Glycvmeris argentea. Da Costa Brit. Conch, p. 170. t. 

 15. f. 6. 



Tellina Adriatica. Gmelin, p. 3243. 



Donax argentea. Gmelin, p. 3265. 



Bonanni Rec. 2. f. 34, and Kirch, f. 35. Petiver Gaz. t. 



1 7. f. 9- Gualter, t. 88. f. R. Erie. Meth. t. 3 1 1 . f. 3. 



Inhabits the Adriatic. Bonanni. Coasts of Britain. Pennant, 



6jc. Naples. Ulysses. St. Domingo. Bruguiere. 



