OSTREA. . 259 



Pecten reticulars. Chemnitz, xi. p. 263. t. 207. f. 2039 

 and 2040. ? 



Inhabits the coasts of Denmark on Fuci. Midler. 



This appears to be rather smaller than the foregoing species, 

 which it much resembles, and is red variegated with white 

 spots and dots ; the inside is of the same colour, and is stri- 

 ated as well as the outside ; Midler says that the ovary of the 

 animal is red in this species, and white in O. tigerina. 



exotica. 27. Shell sub-orbicular, slender and 

 smooth; margin acute and entire. 



Pecten exoticus. Chemnitz, xi. p. 262. t. 207. f. 2037 and 

 2038. 



Inhabits the Red Sea. Chemnitz. 



Shell about an inch and a quarter long, and the breadth rather 

 exceeds the length; the colour is pale brown, with darker 

 somen hat triangular rays, and mottled with white towards 

 the margin ; Chemnitz has described the ears to be equal, 

 but they are represented quite otherwise in the figure. 



sanguinea. 28. Shell sub-ovate, depressed, with 

 about twenty-two spinous convex ribs, and the 

 interstices longitudinally striated. 



Ostrea sanguinea. Linnaus Syst. Nat. p. 1146. Schroe- 

 ter Einl. iii. p. 312. Gmelin, p. 3323. 

 Variety A. Scarlet. 



Pecten sanguineus. Chemnitz, vii. p. 326. t. 66. f. 628. 

 Lister Conch, t. 185. f. 22. 

 Variety B. Citron colour. 

 Ostrea sulphurea. Gmelin, p. 3328. 

 Ostrea crocea. Gmelin, p. 3330. 

 Ostrea, No. 14. Schroeter Einl. iii. p. 328, and No. 55. 



p. 341. 

 Pecten sulphureus. Chemnitz, vii. p. 328. t. 66. f. 629. 

 Gualter, t. 74. f. P. Seba, iii. t. 87. f. 13 and 18. 

 Variety C. Orange. 

 Ostrea media. Gmelin, p. 3330. 

 Ostrea sulphurea, Var. £. Gmelin, p. 3328. 

 Ostrea, No. 15. Schroeter Einl. iii. p. 328, and No. 54, 



p. 340. 

 Pecten aurisicanus. Chemnitz, vii. p. 329. t. 66. f. 630 and 

 631. 



Gualter, t. 74. f. N. Seba, iii. t. 87. f. 14. 

 Inhabits the Southern Ocean. Limaus. Coasts of Cura§oa. 



s 2 



