240 ARCA. 



^quilatera. 32. Shell somewhat heart-shaped, 



longitudinally striated both inside and out ; 



apices approximated, and the margin plaited. 



Area aequilatera. Gmelin, p. 3311. 



Area variegata aequilatera. Chemnitz, vii. p. 227. t. 57. f. 



562. 

 Area, No. 16. Schroeter Einl. iii. p. 286. 

 Inhabits the coasts of the West India Islands. Chemnitz. 

 This shell is nearly of the same size, and a good deal resembles 

 A. decussata, but it is constantly thinner, and much less 

 rounded on the slopes ; the colour is pale chestnut, variegated 

 with white. 



fallens. 33. Shell sub-orbicular, and slightly ob- 

 lique, with decussated striae ; summits re- 

 curved, and the cartilage cleft extremely nar- 

 row ; margin crenated. 



Area pallens. Linnceus Syst. Nat. p. 1 142. Schroeter Einl. 

 iii. p. 270. t. 9- f. 1. Gmelin, p. 331 1. Bruguiere Enc. 

 Meth.p.112. 



Inhabits the Indies. Linnams. 



The shell figured for this species by Schroeter, is but little 

 more than three-quarters of an inch in diameter, and marked 

 with very minute decussated striae ; the summits are central 

 and inflected, but not turned towards either side ; the colour 

 is pale, with a reddish or sometimes a greyish tinge, and the 

 inside is reddish. 



\ngulosa. 34. Shell somewhat heart-shaped, ven- 

 tricose, striated longitudinally, and angulated 

 at the anterior end ; summits inflected, and 

 the margin crenated. 



Area angulosa. Gmelin, p. 3315. 



Arcasinuata, seu sub-angulata. Chemnitz, vii. p. 234. t. 57. 

 f. 567. 



Area angulata. Bruguiere Enc. Meth. p. 234. 



Venus pellucida. Gmelin, p. 3290. ? 



Bonanni Rec. 3. f. 397. and Kirch. 2. f. 118.? Lister 

 Conch, t. 245. f. 76. 

 Inhabits the coasts of Jamaica. Lister. Brazils. Bonanni c $ 



West Indies, and coasts of Guinea. Chemnitz. 

 Shell about two inches long, and two inches and two lines 



broad ; the colour is brown, except on the two sides which 



