PATELLA. 1037 



colour on the outside is dull orange-brown, and the inside is 

 tinged with bluish or reddish brown, and somewhat glossy ; 

 the ribs are slightly wrinkled and undulated towards the 

 margin, which is crenated ; the summit is nearly lateral, and 

 recurved over the posterior end. 



INTORTA. 47. Shell convex, with longitudinal 

 striae, which are alternately larger, and armed 

 with vaulted scales ; summit recurved and 

 the base ovate. 



Patella intorta. Pennarit Zool. iv. p. 143. t. 90. f. 148. 

 Dotiovati, V. 1. 146. Maton and Racket, in Lin. Trans. 

 viii. p. 231. Montagu Supp. p. 154. 

 Patella pectinata. Born Mas. p. 423. t. 18. f. 7. 

 Patella Pectunculus. Gmelin, p. 3713. 

 Patella, No. 40, and No. 41. Schrueter Einl. ii. p. 458. 

 Patella, No. 49, and No. 50. Schreihers Conch, i. p. 350. 

 Le Cabochon,ou Bonnet epineux. Favanne, i. p. 547. t. 



4. f. K. 

 Martini i. p. 148. t. 12. f. 1 15. 



Inhabits the coasts of England. Pennant, S^c. Jamaica. Mar- 

 tini. America and the Falkland Islands. Favanne. 



The length of the base varies from three-quarters of an inch 

 to an inch and a quarter, and the greatest depth is about 

 half the diameter ; the shell also varies greatly in colour, 

 and according to Favanne, is either orange with the summit 

 white, ferruginous with the striae of a blackish brown, or 

 fawn-coloured with yellowish red rays and mottled with 

 white ; it has upwards of twenty nuiricated longitudinal 

 striae, and intermediate smaller ones. 



CASSIDA. 48. Shell convex, longitudinally ribbed, 

 and striated transversely, with the summit 

 recurved ; base roundish, and the margin 

 crenated. 



Patella Pectunculus, Var. Gmelin, p. 3713. 

 La Lentille. Favanne, i. p. 539. t. 4. f. C. 

 Martini, i. 1. 12. f. 116. 



Inhabits the coasts of the Isle of France and Otaheite. Favanne. 



The diameter, according to Favanne, varies from one third to 

 three-quarters of an inch, and the aperture is roundish-ob- 

 long ; the shell is thick, and the longitudinal ribs are crossed 

 by fine transverse strize ; the colour is reddish or yellowish 

 brown, or sometimes bluish white, and the inside is white 



