STANTON I THE MARINE CRETACEOUS INVERTEBRATES. 



EXPLANATION OF PLATE X. 



PAGE 



HATCHERICERAS? PUEYRRYDONENSE Stanton ....... 42 



Fig. i. Side view of the type. 



Fig. 2. Aperture view of same. 

 HATCHERICERAS? TARDENSE Stanton ........ 41 



Fig. 3. Suture of type specimen. 



Fig. 4. Side view of same. 



Fig. 5. Aperture view of same. 



(VOL. IV) 



