242 ARCA. 



Adriatic. Chemnitz. Mediterranean. Bruguiere. Coasts 

 of Britain. Sozcerby, fyc. 

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

 a half broad, of a rusty brown colour, variously mottled or 

 striped with white, or white with chestnut, orange, or yel- 

 lowish brown stripes. Bruguiere says it differs from A. 

 pilosa in being broader in proportion to the length, and in- 

 equilateral, and in having the summits rather more elevated. 

 Montagu on the other hand in his Supplement, p. 55. has 

 given some strong reasons for his opinion that A. pilosa, and 

 A. glycymeris are mere trifling Varieties of the same species. 



pilosa. 37. Shell sub-orbicular, equilateral, with 

 obsoletely decussated striae ; umbones incur- 

 ved, and the margin crenated. 



Area pilosa. Linnaus Syst. Nat. p. 1 148. Born Mus. 

 p. 92. Chemnitz, vii. p. 231. t. 57. f. 565 and 566. 

 Schroeter Einl. iii. p. 275. Gmelin, p. 3314. Bruguiere 

 Enc. Meth. p. 21 6. Montagu Test. p. 1?6, and Supple- 

 ment, p. 55. Maton and Racket, in Lin. Trans, viii. 

 p. 94. t. 3. f. 4. Dorset Cat. p. 3G. 1. 1 1 . f. 2. 

 Area glycymeris. Pennant Zool. iv. p. 98. t. 58. f. 58. 



Donovan, ii. t. 37. 

 Glycymeris orbicularis. Da Costa Brit. Conch, p. 168. t. 



11. f. 2. 

 Bonanni Rec. 2. f. 80, and Kirch, f. 79- Gualter, t. 73. 

 f. A. Knorr, ii. t. 23. f. 6, and vi. t. 12. f. 4. Favanne, 

 t. 53. f. D 2 and D 5. Enc. Method, t. 310. f. 2. 

 Inhabits the Mediterranean. Linnccus. Coasts of Britain. 



Pennant, fyc. France, Spain, and Italy. Bruguiere. 

 Shell sometimes nearly four inches long, and about equally 

 broad, but when it is full grown the length is said by Bru- 

 guiere to rather exceed the breadth ; it is covered, as also is 

 A. glycymeris, with a brown somewhat hairy epidermis, and 

 the colour and markings are similar and equally various ; it 

 is marked with transverse antiquated ridges, and obsolete 

 longitudinal striae. Ulysses says, that the well known false 

 Cameos are made at Trapani of this shell. 



stellata. 38. Shell orbicular, with minute decus- 

 sated stria? ; summits curved obliquely, and 

 stellated ; margin crenated. 



Area stellata. Bruguiere Enc. Meth. p. 117- 

 Venus stellata. Gmelin, p. 3289- 



