P. Javanica.

P. tuberculifera.

P. miniata.

P. pellucida.

P. tricostata.

P. Australis.

P. cymbularia.

P. vulgata. The common Patella. Pl. [2], fig. 1.

Conic, summit obtuse and vertical; sometimes ribbed from the vertex to the margin with divergent striæ, sometimes striated without ribs; exterior dark brown or greenish, internal blue or purple radiations.

P. compressa. The compressed or flat-sided Patella. Pl. [2], fig. 2.