EXPLAXATION OF PLATE C\"Iir. 



TURRILITES PAriJEK Wllitficlcl p. 834 



1-4. Four views of tlie type specimen. 



Nin'csiiik marl; Xaz'csink h::.s. 



Heteruceras CdXRAin ( Mortiin ) p. 833 



5-8. Two views each of two specimens. 



Xarcsinh marl: .Ulaiitir Ur^lilaiids, (loS). 



