PLATE IX. 



FIGS. 



1—3. Cucullaea Forbesi (Pict. and Camp.). Perna-bed, Atherfield. (P. 49.) 



1. Wiltshire Collection, Woodwardian Museum. Left valve. 



2. Woodwardian Museum, a, dorsal ; b, anterior of right valve ; c, part of b x 3. 



3. "Wiltshire Collection, Woodwardian Museum. a, hinge and area of left valve ; b, 



exterior of left 



valve. 



