242 Bur^ETiN 31 242 



PLATE 41 

 Figure Page 



I. Charna ntonroensis Aid.. 24 mm. (Copy) 130 



Monroe Co. , Ala 



2, 3. Charna {vionroensis?) .Wautubbee 131 



Fig. 2, 9 mm. 

 3. 10 " 



4. Chama, sp. 19 mm., Elm Gr., Tex. Tex. Mus 131 



5-7. Cardiuin Aarrm Vaughan 131 



Figs. 5 and 6, type specimen, U. S. Nat, Mas., 70 mm. 

 7, 68 mm., I^isbon, Ala. 



8, 9, a. Cardium claiborttetise PiAdi 132 



Fig. 8, 33 mm. ; De Soto, Miss. Aid. Coll. 



8, a. From Claiborne sand bed, X 4. 



9, Collier's Ferry, Tex. Mus. 



