IXOCERAMUS. 



313 



Fio. 05 



Fig. 67 



Fig. Go. — Iiioceramiis Lamarcii, Park. Upper Clialk (probably zone of Holaster planum), Swaffliam, Norfolk. 

 Norwich Museum, No. 3354. Ki^ht valve. x i. 



Fig. 67. — Iiirn-enimm Lamarcld, Park. Upper Chalk (zone of Holaster 2>lanii.\), Newmarket. Sedgwick 

 Museum, Cambridge. Kight valve. Natural size. 



Fig. Tfi. — Inorci-oiiiii.s I.iniKinki, I'ark. The original of /. Lnmarcki, Mantell, 'Fobs. S. Downs,' p. 214, 

 pi. xxvii, fig. 1. Middle Chalk (priibal>ly zone of Terebratiilimi latn), near Lewes (probably Mailing), 

 liritish Museum, No. 4753. Kight valve. Natural size. 



