PLATE II. 
Phylloceras Woodsi v. Hoepen. 
Fig. I. Lateral view of largest paratype. Nat. size. 
,, 2. Posterior view of same. Nat. size. 
,, 3. Lateral view of type. Slightly more than nat. size. 
,, 4. Anterior view of same. Nat. size. 
,, 5. Lateral view of a paratype. Slightly more than nat. size. 
,, 6. Anterior view of same. Nat. size. 
Gaudryceras teniiilineatum v. Hoepen. 
,, 7. Lateral view of type. Nat. size. 
,, 8. Anterior view of same. Slightly less than nat. size. 
,, 9. A portion of the anterior view, below the crack visible in fig. 8, 
enlarged three times, to show the extremely fine ribbing of the 
external surface. 
Gaudryceras varicostatum v. Hoepen. 
,, 10. Lateral view of type. Nat. size. 
,, II. Anterior view of same. Slightly less than nat. size. 
,, 12. A portion of the anterior view, at the beginning of the last whorl, 
enlarged three times, to show the extremely fine ribbing of the 
external surface. 
Gaudryceras Sigcau v. Hoepen. 
,, 13. Lateral view of paratype. Nat. size. 
,, 14. Lateral view of type. Nat. size. 
,, 15. Anterior view of type. Nat. size. 
,, 16. Lateral view of type (the opposite of fig. 14), enlarged three times 
to show the extremely fine ribbing of the shell. 
Tetragonites super stes v. Hoepen. 
,, 17. Lateral view of type. Nat. size. 
,, 18. Anterior view of same. Nat. size. 
,, 19. Lateral view of paratype. Nat. size. 
,, 20. Anterior view of same. Nat. size. 
