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CONRAD'S DESCRIPTIONS OF 



Tippah, 



New Jersey, 



Eufaula, 



it 

 u 



u 

 <( 

 l( 

 li 

 It 

 li 

 it 

 n 

 a 

 it 



10. Axinsea (Pectunculis) australis, Morton, 



11. Meretrix Tippana, Conrad, 



12. Ctenoides pelagica (Lima,) Morton, 



13. Crassatella vadosa, Morton, 



14. C. lintea, Con., 



15. Barbatia uniopsis, Con., 



16. Pecten Burlingtonensis 1 Gabb, 



17. Anomia argentaria, Morton, 



18. Turritella vertebroides, Morton, 



19. Ficus octoliratus, Con., 



20. Turbinopsis Hilgardi, Con., 



21. Nautilus Dekayi, Morton, 



22. Baculites carinatus, Morton, 



B. Spillmani, Con., 



23. Solenoceros annulifer, 



Hamites annulifer, Morton, 



24. Vermetus (Hamulus) onyx, Morton, 



PERIPLOMA, Schum. 

 Periploma applicata. PI. 46, fig. 1, Jour. Acad. (New Ser.) vol. 3, p. 324. 



PHOLADOMYA, Sowerby. 



Pholadomta anteradiata. PI. 46, fig. 3. Oblong, straight, convex-depressed^ 

 subequilateral ; anterior hinge line very slightly oblique ; anterior extremity sub- 

 truncated and on a line with the umbo ; posterior margin regularly rounded ; posterior 

 side deeply sulcated concentrically; anterior side with distant, acute, prominent lines, 

 seven or eight in number. 



Locality. — Tippah Co., Miss. Dr. Spillman. 



Pholadomya postsulcata. A fragment allied to the preceding species, but with 

 closely arranged radii anteriorly ; larger than the preceding. 

 Locality. — Tippah Co., Miss. Dr. Spillman. 



Pholadomta papyria. Very thin, concentrically striated, and deeply sulcated on 

 the posterior side; anteriorly radiated with a few prominent lines, the two most 

 distant from anterior end remote. 



Locality. — Tippah Co. Dr. Spillman. 



A fragment of a young or small species, very distinct from P. anteradiata. 



These three species have an elongated form not unlike that of Anatina, to which 

 genus a species has been referred in the Quarterly Jour. Geol. Soc, 1858, (A. versi- 

 costata.) All these shells are characterized by concentric furrows posteriorly and 

 by radiating lines. I propose to arrange them in a subgenus, under the name of 

 Anatimta. 



Pholadomya occidentalis, Morton. Subovate, very inequilateral, inflated an- 



