1026 PATELLA. 



Shell from two to four inches long, and about three-fourths as 

 broad, of a whitish colour, sometimes marked with a circle 

 of brown round the summit ; the ribs, of which there are 

 upwards of sixteen, are here and there tuberculated, and 

 somewhat foliaceous. Favanne says, " Sa coquille est fort 

 6paisse, de forme ovale, tres elevee, et a sommet pointu, 

 d'oit partent en rayonnant un grand nombre de cotes alterna- 

 tivement plus et moins grosses, souvent aigues, et a vive- 

 arrete, et souvent aussi raboteuses par les crues de la co- 

 quille. On y appercoit quelquefois des stries mal formees 

 et presque imperceptibles." 



ocuLUS. 24. Shell oval, thick, rather shallow, with 

 broad angulated ribs, and the margin un- 

 equally serrated. 



Patella Oculus. Born Mus. p. 418. 

 Patella Cypria, Var. J3. Gmetin, p. 3698. 

 Patella, No. 34. Schroeter Einl. ii. p. 455. 

 Patella, No. 39. Schreibers Conch, i. p. 347- 

 L'Oeil de Bouc radie. Favanne, i. p. 518. t. 2. f. M. 

 Gualter, t. 9- f- H. Jrgenville, t. 2. f. B. Da Costa 

 Elements, t. 2. f. 1. Martini, i. p. 130. 1. 10. f. 86. 



Inhabits the coasts of the Island of Raclia, in the Archipelago. 

 Tournefort. Brazil. D'Avila. Common in the Mediter- 

 ranean, on the coasts of Africa, the Isle of Cyprus, and 

 Provence. Favanne. 



The length of the base is often three inches and a half, and the 

 breadth three inches ; the colour is yellowish white, and 

 the summit surrounded by one or two dark brown rings ; 

 the inside is of a greyish white, and the muscular impression 

 milk-white. I have followed Martini, Schroeter, and Schrei- 

 bers, in placing this separate from P. Cypria, and Mar- 

 tini's two figures appear very different, but some of the others 

 are so intermediate that it is difficult to say to which of them 

 they belong. It is plain, from Favanne's description and re- 

 ferences, that his Oeil de Bouc belongs to this species, but 

 his figure is not a good one. 



PENTAGONA. 25. Shell pyramidal, sub-pentangular, 

 with the summit obtuse, and the margin ir- 

 regularly dilated and crenated. 



Patella pentagona. Born Mus. p. 421. t. 18. f . 4 and 5. 

 Gmelin, p. 3708. 



