Acmaea persona Esch. Mask Limpet. [Fig. 46.]
Acmaea spectrum Nutt. Ribbed Limpet. [Fig. 47.]
Acmaea patina Esch. Pale Limpet. [Fig. 48.]
Acmaea scabra Roe. Tile Limpet. [Fig. 49.]
Acmaea incessa Hds. Seaweed Limpet. [Fig. 50.]
Acmaea asmi Midd. Black Limpet. [Fig. 51.]
Acmaea (Lottia) gigantea. Owl Limpet. [Fig. 52.]
Acmaea paleacea Gld. Chalf Limpet. [Fig. 53.]
Tylodina fungina Gab. [Fig. 54.]