Geological Suirvty of Alabama. 65 



In the Claiborne specimen, however, the rings are larger and of a differ- 

 ent appearance, and there is no trace of longitudinal striae. 



CADULUS VICKSBURGENSIS, Meyer. PI. 3, fig. 6. Am. Jour. Sci., 

 XXIX., 1885, p. 463. 



Inflation very faint near the end, somewhat compressed ; smaller aper- 

 ture with four turret-like appendages, one opposite pair of which is 

 broader than the other pair. 



Locality. Vicksburg, Red Bluff, Miss. 



The type specimen is of the "Higher Vicksburgian." The species is 

 distinctly compressed, but less than Cadulus depressus, Mr., from 

 Claiborne. 



CADULUS QUADRITURRITUS, n. sp. PI. 3, figs. 7, 7a. 



Not compressed ; inflation near the end distinct but gradual ; smaller 

 aperture with four equal rounded appendages, divided by notches of the 

 same shape. 



Locality. Red Bluff, Miss. 



CADULUS JACKSONENSIS, Meyer. PI. 3, figs. 8, 8a, 8b. Am. Jour. 

 Sci., XXIX., 1885, p. 462. 



Rather large ; inflation faint near the end, very slightly compressed ; 

 smaller aperture elliptical ; margin by notches divided into four append- 

 ages ; the two appendages on the smaller side of the ellipse are slender, 

 simple and equal to each other; the two other opposite ones are broad, 

 emarginate in the middle, and unequal in size, that one situated on the 

 convex side of the shell being thfe largest. 



Locality. Jackson, Miss. 



CADULUS TURGIDUS, n. sp. PL 1, fig. 10. 



Width of the shell rapidly increasing for about two-thirds of the entire 

 length, and then more rapidly decreasing ; section circular. 



Locality. Matthews' Landing, Ala. 



Rather common ; I received this shell from Mr. Aldrich. It differ* 

 by its very strong inflation from all the other species of Cadulus of the 

 Southern Tertiary which I know of. 



