266 
ELEMENTS OF GEOLOGY. 
occur, a large Cyprma^ C. oviformis^ a very large Mostellaria 
(Fig. 209), a species of Cancellaria^ six species of Nautilus 
(Fig. 211), besides other Cephalopoda of extinct genera, one 
of the most remarkable of which is the Belosepia (Fig. 212). 
SHELLS OF THE LONDON CLAY. 
Fig, 207. 
Fig. 208. 
Voluta nodosa, Phorus extensus, 
Sow. Highgate. Sow. Highgate. 
Fig. 210. 
Nautilus centralis, Sow. Higbgate. 
Fig.211. 
A Uiria ziczac, Bronn. Syn, Nautilus 
ziczac, Sow. London clay. Sheppey. 
Fig. 209. 
Rostellaria {Mijopocrenes) ampla, Bran- 
der. i of nat. size; also fouud in 
the Barton cla3% 
Fig. m. 
Belosepia sepioidea, Be Blainv. 
London clay. Sheppey. 
Fig. 213. 
Leda amygdaloides. 
Sow. Highgate. 
Fig. 214. 
Cijptodon {Axinus) an- 
ffulatum. Sow. Lon¬ 
don clay. Hornsey. 
Fig. 215. 
Astropecten crispatus, E. 
Forhes. Sheppey. 
