130 
variegated. 0,80. Scotland, not common, Zetland, 
plentiful. 
GrNus.—PATELLA. 
Univalve. not spiral, shield-shaped or retuse-conic, 
umperforate, devoid of a marginal fissure, cavity 
simple ; apex recurved anteriorly. 
'P. Vuuteata. Lan. 1258.—Lam. 28.—Mont. p. 
475.—D. p. 1032.—Dor. Cat. p. 58. t. 23. f. 1,2.— 
list. Ang. p. 195.—Inst. t. 535. f. 14.—Knorr. 6. t. 
27. f. 8.—Bl. t. 48. f. 1.—Extremely variable in form 
being more or less depressed or conie, seutelliform, the 
apex subcentral and obtuse, various shades of yellowish 
sea-green, rough with crowded elevated strize and about 
fourteen but slightly raised subangulated riblets fre- 
quently marked by a difference of color and scarcely, 
if at all projecting at the margin; inside sometimes 
appearing radiated. 24. Common Limpet. 
- 
i= 
P. PectinaTAa. Lin. 1259.—Born, t. 18. f. 
Lam. 40.—B1. t. 49. f. 5.—P. Intorta. Don. t. 146, 
—Pen. 4. p. 143. ¢. 90. f. 148.—Mont. Sup. p. 154. 
—F,. p. 286.—D. p. 1037.—Oval, somewhat trans- 
parent, yellowish brown, with crowded radiating riblets 
armed with black imbricated scales ; apex much inclined, 
prominent nearly marginal. %. Anglesea, Devon, 
Frith of Porth, rare. 
