PLATE XIX. 



Pace 

 Venieixa sunoVALis Conrad 150 



Fig. 1. View of the right side of the cast, which had been labeled by Mr. Conrad. 

 2. View of the hinge, as obtained by a gutta-percha impression on the cast. 



Veniella trapezoidea Conrad 151 



Fig. 3. View of the right side of a epeciTuen, which is slightly distorted by compression. 



Veniella inflata Conrad 147 



Fig. 4. View of the left side of the type specimen, natural size. 

 5. Enlarged cardinal view of the same. 



Veniella f.levata Conrad 148 



Fig. 6. Vertical view of the type specimen, enlarged to two diameters. 

 7. Profile view of same. 



Veniella Conradi M.irton 144 



Fig. 8. View of a cast of this species, natural size, from Holmdel, N. J. 



9. Similar virw of another cast. 



10. View of the interior of a specimen from Eufaula, Ahi., of which the exterior cor- 



responds to Fig. 9 m its varices. 



Veniella trigona Gabb 149 



Fig. 11. View of the left side of the type specimen. 



12. Anterior view, showing the convexity. The figure is very imperfect. 



13. Left view of a second example, also from the collection of the Academy of Natiir-al 



Sciences, Philadelphia. 



14. Anterior view of the same. 



Veniella ? decisa Morton 145 



Fig. 1."). Left view of a nearly perfect cast of the species, showing the general features. 

 16. Anterior view of the same. 



SpH^RIOLA UM BON ATA Whitfield 1.52 



Fig. 17. Right view of the type specimen. 



18. Cardinal view of the same. These figures show the ligament and general form of 

 the shell. 



306 



