﻿Quart. Journ. Geol. Soc. Vol. LXI, Pl. XXXIII. 



Fig. 1. x 2. 



Fig. 2. nat. 

 size. 



Fig. 4. nat. size. 



Fig. 3. * about 11 



RH/ETIC LAMELLIBRANCHIATA. 



/. IV. Tutcher, Photo. 



Bemrose, Collo. 



