10 
SHELL GALLEKY. 
Fig. 3. 
1. Radula of the Common British Rock-Limpet (Patella vulgata), natural 
size. 
2. Two transverse series of teeth : a, median teeth ; 6, laterals ; c, uncini or 
marginals. 
Fig. 4. 
The Common Rock-Limpet (Patella vulgata). British. 
1. Animal: a, foot; b, fringed mantle; c, tentacles; d, mouth; e, eyes; 
/, gills. 
2. Side view of shell, showing the impression or scar of the attachment- 
muscle, g. 
3. Upper surface of the shell. 
