135 
2 Nerineva Guise. 
2a " ” Another example 
2b " ” Section showing internal folds. 
26 " ” Whorl enlarged. 
3 Trochus elypeatus. 
4 Nerina undulata. 
da ” ” Whorl enlarged. 
5. Trigonia gemmata. Var. bifera Lye. 
6 Cyprina Lucyi. 
7 = Astarte clypeata. 
8 Lucina clypeata. 
4 Astarte sub-angulata. 
10 10a Astarte depressa. Goupr. Var. Rodborensis. 
11 Sowerbya elongata. 
a1 u ” Enlarged view, showing encircling lines and striz. 
PuaTE V. 
11a 1b Pecten clypeatus. 
2 Opis Painei. 
3 Isoarca clypeata. 
3a " " Magnified view of portion of internal mould. 
3b " " Magnified view, showing encircling and radiating lines. 
4b Pteroperna clypeata. Right valve. 
4a ” ” Left valve. 
Ab 4c Other examples. 
5 Cardium cognatum. Lyc. Var. Clypeatum. 
6 " ” Another example. 
7 
7a Astarte depressa. Goupr. Var. depressior. 
7b 
8 Chemnitzia. (Qy.) Internal mould. 
9 Cerithium elypeatum. 
9a " ” Whorl enlarged, showing transverse lines. 
n2 
