EXPLANATION OF PLATE CVIII. 



TURRILITES PAUPER Whitfield, 



1-4. Pour views of the type specimen. 



Navesink marl; Navesink HUls. 



HETEROCERAS CONRADI (Morton),. . . . 



5-8. Two views each of two specimens. 



Navesink marl; Atlantic Highlands, (108). 



