Oval, elongated, compressed on the sides, having the summit sub-anterior, well marked, and curved; exterior fawn colour, interior of a silvery hue.
P. deaurata. The golden red Patella. Pl. [2], fig. 3.
Sub-conic, summit more anterior, with a slight forward inclination; colour yellowish red.
P. cochlear. The spoonlike Patella. Pl. [2], fig. 4.
Depressed, the summit hardly marked, and much more narrow in front than behind; exterior brownish, interior light blue.
P. scutellaris. The buckler Patella. Pl. [2], fig. 5.
Depressed, summit sub-anterior, radiated from the summit to the margin; brown colour, with a yellowish band parallel to the margin.
P. pectinata. The pectinated Patella. Pl. [2], fig. 6.
Oval, summit well marked and anteriorly inclined; ribbed from the summit to the margin, which is slightly convex in the middle.
P. cymbularia. The cymbular Patella. Pl. [2], fig. 7.