PLATE XXIII. 



DoNAx FORDi Lea in 



Fig. 1. View of the type ? specimen in the collection of the Academy of Natural Sciences 

 of PUiliKlelphia. 



.^NONA Eui-AULKNSis Courad 1G8 



Fig. 2. View of the type; natural size. 



3. Enlargement of the hinge to three diameters. 



.aixONA PAPYlilA Conrad 169 



Fig. 4. View of the only specimen known; Conrad's type. 



LlNEARIA CONTRACTA Whitfield l(w 



Fig. .5. View of a specimen, natural size, as obtained by gutta-iicrcha from a natural mould. 



LiNiSAHiA MKTASTRIATA Conrad 165 



Fig. 6. View of the exterior of a shell from Haddonfield. 



7. Similar view of a cast in a natural mould from Holmdel, N.J. 



8. An enl trgemeut to two diameters of the interior of the shell in Fig. (5, showing the 



hinge characters. 



CORIMYA TENUIS Whitfield 170 



Fig. 9. View of a cast of medium size. 



10. Outline cardinal view of the same showing the inequality of the valves. 



11. View of a larger cast, showing the vascular scars. 



Teli-Imera eborea Conrad 164 



Fig. 1'2. View of the type specimen ; natural size, 

 i:?. Enlargement of the hinge. 



Peuiplomvaelliptica Gabli 177 



Fig. 14. Left view of a cast of the species. 

 15. Cardinal view of the same. 



.a;oRA CRETACEA Conrad 167 



Fig. 16. View of the exterior of Mr. Conrad's type specimen. 

 17. View of the hinge of the same. 

 Veleda lixtea Courad 172 



18. View of a large crushed specimen ; natural size. 



19. Enlargement of the hinge. 



20. Enlargement to three diameters of a nearly perfect shell. 



21. Enlargement to two diameters of a larger, partially exfoliated specimen. This 



and the foregoing are all from Haddonfield, N. J., and were used by Mr. Con- 

 rad. 



Veleda transversa Whitfield 174 



Fig. 22. View of a cast, showing the general form, surface 8tri;e, and im|irints of teeth. 

 Marlborough, N. J. 



Vei.eda tellinoides Whitfield 173 



Fig. 23. View of a cast of a left valve, showing the strongly contrasting form with that of 

 Fig. 22. 



Cehcomva peculiaris Conrad 178 



Fig. 24. Exterior of the fragment described by Mr. Conrad. 



25. View of the nnder surface, showing all that remains of the hinge. 



Corbula subcompressa Gabb 180 



Fig. 26. View of the only specimen observed, enlarged. 



Corbula Foulkei Lea 180 



Fig. 27. Enlarged view of the exterior of a specimen from Haddonfield, N. J., the original 

 locality. 



28. Interior view of the same. 



29. Enlarged view of a shorter specimen, probably a variety of ^he same. 



Corbula crassipuca Gabb 178 



Fig. :iO. Enlargement to three diameters of a specimen i'nim Haddonfield, N. J. 



