1058 PATELLA. 



NODOSA. 94. Shell oval, sub-conical, with elevated 

 strongly tuberculated ribs, and the summit 

 nearly central ; margin crenated. 



Patella nodosa. Born Mus. p. 429. 



Patella Jamaiceiisis. Gmelin, p. 3730. 



Patella spinosa. Gmelin, p. 3731. 



Patella, No. 153. Schroeter Einl. ii. p. 506. and No. l68. 



p. 513. t. 6. f. 12. 

 Le Lepas ergote. Favanne, i. p. 535. t. 3. f. D. 

 Listei- Conch, t. 528. f. 6. Petiver Gaz. t. 153. f. 5. 



Inhabits the coasts of Barbadoes. Lister. St. Domingo and 

 Martinique. Favanne. 



Shell about fifteen lines long, eleven broad, and eight high, and 

 is white both inside and out ; it has about forty-eight alter- 

 nately much elevated and small longitudinal ribs, crossed by 

 four or five convex concentrical rings, which form strong 

 pointed tubercles at the intersections ; the perforation at the 

 summit is oblong, contracted at the middle like a key-hole, 

 and surrounded on the inside with a milk-white callus. 



PERFORATA. 95. Shell ovate, with unequal lon- 

 gitudinal nodulous ribs, and the margin 

 toothed ; perforation circular. 



Patella perforata. Gmelin, p. 3730. 

 Patella Barbadensis. Gmelin, p. 3729. 

 Patella, No. 152. Schroeter Einl. p. 506. 

 La Perdrix. Favanne, i. p. 536. t. 3. f. F. 

 Lister Conch, t. 528. f. 7. Petiver Gaz. t. 80. f. 12. 

 Martini, i. p. 135. 1. 11. f. 93, 96, and 97. 



Inhabits the coasts of Barbadoes. Lister. St. Domingo and 

 Martinique. Favanne. 



Shell about an inch and a half long, one inch broad, and half 

 an inch high, of a pale grey, yellowish green, or whitish co- 

 lour, with pale or dark purplish brown or reddish rays, and 

 sometimes spotted in concentric circles ; the upper half of 

 the inside is white, and the part towards the margin is green ; 

 it is slighdy contracted towards one end, and the summit i» 

 placed not far from the center ; the circular perforation is 

 often bordered with a pale chestnut, reddish, or straw-co- 

 loured ring, and the callus, which surrounds it on the inside, 

 is oval. Martini considered his figures 93, 96, and 97, to be 

 the same species ; and they are all quoted by Gmelin for P. 

 Barhadensis, though he has afterwards also quoted the latter 

 for P.peiforata. 



