466 



PATELLIDiE. 



rota, Chem. 

 rustica, Linn. 

 saccharina, Liiin. 

 sagittata, Gould. 

 scutellaris, Lam. 

 spectabilis, Dkr. 

 spinulosa, Meusch. 

 stellifera, Gmel. 

 stellularia, Quoy and Gaini. 



talcosa, Gould. 

 Tarentina, Lam. 

 testudinaria, Linn. 

 tramoserica, Chem. 

 Tranquebarica, Gm,el. 

 fuberculifera, Lam. 

 Ulyssiponensis, Gmel. 

 vulgata, Linn. 

 zonata, Schub. and Wag. 



Sub-gen. scutellastra, H. and A. Adams. 



Shell stellate, surface radiately ribbed ; vertex sub-central ; 

 margin of aperture with radiating processes. 



gorgonica. Humph. 

 pentagona, Born. 



plicata, Born. 



Sub-gen. cymbula, H. and A. Adams. 



Shell oblong, laterally compressed, surface radiately striated; 

 vertex hooked; aperture with the margin entire. 



compressa, Linn. 



Sub-gen. olana, H. and A. Adams. 



Shell ovate, oblong, depressed, narrowed in front, dilated and 

 rounded behind, surface radiately striated; vertex obtuse; 

 aperture with the margin slightly irregular. 



cochlear, Gmel. 



