PLATE XXVIII. 



Page. 



Crassatella cukta Conrad ? 209 



Figs. 1 aud 2. Views of a east from Squankum, N. J. Columbia College collection. 



3. A partial cast from New Egypt, showing surface strise. A. M. N. H. collection. 

 4 aud 5. Views of a similar specimen from Squankum. Rutgers College collection. 



Crassateli.a littoralis Conrad 212 



Fig. (I. Au imperfect shell of the species from Squankum. Rutgers College collection. 



7. View of an internal cast showing its elliptical form and rounded umboual ridge, 

 Squankum. Columbia College collection. 



MoDioLA JoHNSONi Wbittield 207 



Fig. H, Cardinal view, natural size, of a very perfect specimen of the species. 

 9. Lateral view of the same. 



CmocARDiUM NUCLEOLUS Whitiield 214 



Fig. 10. Lateral view, enlarged, of an internal cast of the usual size and form. 

 11. Cardinal view of the same. 



Veniella RHOMBoiDBA Conrad 215 



Fig. 12. Lateral view of a shell presenting the usual features. 

 13. Cardinal view of the same. 



Cardita intermedia Whit field 209 



Fig. 14. Lateral view of an internal cast, showing the remains of plications on the margin. 

 15. Cardinal view of the same. 



Caryatis veta Whitfield 218 



Fig. 16. View of a cast from Squankum, N. J. 



17. View of a cast from Farmingdale, N. J. 

 Fig. 18. Lateral view of a specimen from Farmingdale, N. J., preserving the shell and 

 showing the surface strise. 

 19. Anterior view of the same. 



Periplomya truncata Whitfield 220 



Fig. 20. Lateral view of a cast from near New Egypt, N. J. Rutgers College collection. 

 21. Cardinal view of the same. 



Petricola Nova-jEgyptica Whitfield 216 



Fig. 22. View of the specimen described showing the form of the .shell aud the pallial sinus. 



Vei.eda nasuta Whitfield 217 



Fig. 23. View of a right valve showing the surface strias. 



Panopea elliptic a Whitfield 219 



Fig. 24. Lateral view of the most perfect specimen observed. 

 25. Cardinal view of the same. 



324 



