in 



h 



)/ 



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PLATE X X 1 1 T . 



DoNAx FoRDi Lea 



Fig. 1. View of tlie tyjie ? specijueu in Wie collection of the Academy of Natural Sciences 

 of Philadelpbia. 



^NONA EuFAULEXSis Conrad |, o^ 



Fi^r. 2. Vie\Y of tlie type; natural size. 



3. Enlargement of the hinge to three diameters. 



^XONA PAPYiJiA Conrad |; 9 



Fig. 4. Vi<'\v of the only specimen known; Conrad's type. 



LiNEARIA COXTRACTA Whitlield 



Fig. .5. View of a specimen, natural size, as obtained by gutta ]!erc]ia from a natural mould. 



LixEAia.v METASTRiATA Courad |,-r 



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



7. Similar view of a cast in a uatuial mould from Hoimdel, X. J. 



8. An enhn^gement to two diameters of the interior of the shell in Fig. (>, showing the 



hinge characters. 



CORIMYA TENUIS Whitfield I^Q 



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



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



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



Tr:LLiMERA EHOREA Conrad ^q^ 



Fig. 1-2. View of the tyi)e specimen; natural size. 

 13. Enlargement of the hinge. 



Pepjplomya elliptica Gabb ^ -^ 



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

 15. Cardinal vi(^w of the same. 



^ORA CRETACEA Conrad IQ-- 



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

 17. View of the hinge of the same. 

 Veleda lixtea Conrad ' _ i •■o 



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 exfcdiated specimen. This 



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

 rad. 



Veleda transv^ersa Whitfield j-4 



Fig. 22. View of a cast, showing the general form, surface striie, and imprints of teeth. 

 Marlborough, N. J. 



Veleda tellixoides Whitlield ^-^^3 



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

 Fig. 22. 



Cercomya PECULiARis Conrad 1-0 



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



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



CORBULA SUBCOMPRESSA Gabb j^q 



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

 CORBULA FOULKEI Lea 



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

 locality. 



28. Interior view of the same. 



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



CORBULA CRASSIPLICA Gabb 



Fig. :*0. Enlargement to three diameters of a specimen from Haddontiehl, N. J. 

 :U4 



180 



8 



