PLATE IX. 



Page. 



Plicatula urticosa Morton 61 



Fig. 1. View of .a specimen from Freehold, N. J. 



2. View of a dittVrent individual, showing considerable variation in surface characters 

 from the last. 



Eadula pelagica Morton 61 



Fig. 3. View of the right side of a specimen preserving a portion of the shell, and show- 

 ing ani;ular plications ; from Holmdel, N. J. 



4. View of a smaller shell, entire, with rounded plications, from the limestone nodules 



at' Holmdel, N. J. 



5. Posterior view of a speciueu from Holmdel, showing the curvature of the shell. 

 Radula acutilineata Conrad '. 02 



Fig. 6. Enlarged view of a shell from Haddondeld, N. J., sbowing the narrow radii. 

 7. Eulargement of the surface of the same. 



Radula reticulata Lyell and Forbes GI5 



Fig. 8. A view, enlarged to two diameters, of a shell from Upper Freehold, N. J. 

 9. Profile view of the same, showing its convexity. 



Paranomia uneata Conrad 45 



FigT- lU. View of an upper valve of this species, imperfect at the upper edge. 



Spondylus gregalis Morton 57 



Figs. 11 and 12. Views of a very fair lower valve of large size, showing the features very 

 perfectly. The shell shows a perforation made by some boring moUusk during 

 life. 



286 



