1046 PATELLA. 



Inhabits the coasts of the Isles of France and Otaheite. Fa- 

 vatine. Cape of Good Hope. Humphreys. 



The length of the base varies from two to four inches, and the 

 breadth and height are each about half the length; the 

 shells which 1 have seen are of a pale nearly uniform horn- 

 colour, both inside and out, but according to Martini it is 

 sometimes longitudinally striped with yellowish brown, and 

 Favanne mentions some Varieties differently mottled with 

 reddish fawn-colour and white. 



AFRA. (j(i. Shell conical, elevated, with about one 

 hundred narrow longitudinal ribs ; summit 

 obtuse, glabrous, and central. 



Patella Afra. Gmeiin, p. 3715. 

 Patella, No. 1. Schroeter Einl. ii. p. 441. 

 Le Gadin. Admison Senegal, p. 33. t. 2. f. 4. 

 Gualter, t. 9- f- C. Martini, i. p. 95. t. 5. f. 34. 



Inhabits the coasts of Cape Manuel, and the island of Goree. 

 Adamon. 



Shell about ten lines or an inch in diameter at the base, and 

 more than half as high, of a pale greenish brown colour, 

 and the inside white ; it has about one hundred narrow lon- 

 gitudinal ribs, and die base is nearly circular. Favanne con- 

 sidered Le Gadin to be the same as Martini, t. 10. f. 84, 

 which is P. chlorosticta ; but it appears to me to be per- 

 fectly different. 



RUSTiCA. 67. Shell conical, very entire, with fifty 

 narrov/ obtuse longitudinal ribs. 

 Patella rustica. Linnaus Syst. Nat. p. 1261. Born Mus. 

 p. 426. t. 18. f. 11. Favanne App. p. 845. Schroeter 

 £m/. ii. p. 428. t. 5. f. 4. .? G me/in, p. 37 IS.? Miis. 

 Lesk. p. 304. 

 Patella Lusitanica. Gmeiin, p. 3715. 

 Patella. No. 2. Schroeter Einl. ii. p. 441 ; No. 3. p. 442; 



and No. 9- p. 445. 

 Le Bouclier mouchete. Favanne, i. p. 489. t. 1. f. I. 

 Lister Conch, t. 537. f. 20. ? Gualter, t. 8. f. N, M and P. 

 Martini, i. t. 5. f. 35 and 36, and t. 6. f. 43. 

 Inhabits the coasts of Portugal. Martini. Jamaica, Provence, 



and China. Favanne. 

 The base is about nineteen lines long and seventeen broad, and 

 the height according to Favanne varies considerably, some 

 shells being much elevated and others much depressed ; the 

 colour is whitish, variegated with brown or pale chestnut 

 longitudinal rays, and the summit surrounded with one or 

 more yellowish rings ; sometimes the rays are dotted with 



