PAL/EONTOGRAPHICAL SOCIETY, 19 I O 



_ Vol 11 PLATE XLVlll 





\'. \: ,\\\;v ''^^ 



W" \ 



V/ 



-^7 



?^^^^7 



la 



2 a 



T.A. Brock del. 



CRETACEOUS LAMELLIBRANCHIA . 



London Stereoscopic Co. Imp. 



