24 



superficial soil, and elevated above the level of the sea, on the 

 coasts of New Jersey and Long Island, are referrible to the 

 Upper Marme formation. 



TURBINELLA PYRULOIDES. Tab. 10, fig. I. 



Pyriform, ventricose, smooth ; with obscure spiral striae on 

 the inferior half of the body whorl ; spire very short ; apex 

 slightly mammillated ; columella with 4 distant oblique plaits. 



Locality. Claiborne, Alab. ; very abundant. Middle Ter. 



Mr. Vanuxem obtained this species in Georgia, replaced 

 by silex and translucent ; it accompanied a species of Cytherea 

 which also occurs at Claiborne, and probably the fossils of these 

 silicious beds, when further examined, will enable us to refer 

 them to the middle tertiary. This formation extends west of 

 the Mississippi, as I have lately ascertained by means of spe- 

 cimens of ferruginous marl, sent, by Judge Bry of Louisiana, 

 from a locality on the Ouachitta river. They were presented 

 to the American Philosophical Society, and are almost entire- 

 ly composed of a species of Corbula, very common and charac- 

 teristic, in the sandy deposits at Claiborne, and hardly to be 

 distinguished from C. angustata of Sowerby, figured in the 

 Transactions of the Geological Society. 



ANCILLARIA ALTILE. Tab. 10, fig. 2. 



Obovate acute ; body whorl ventricose ; spire rather abruptly 

 contracted, subulate towards the apex which is acute ; suture 

 obsolete; columella callous, much thickened and projecting 

 above. 



Locality. Claiborne, Alab. Middle Tertiary. 



The genus AnciUaria appears to be very characteristic of the 

 equivalents of the London Clay, most of the known species ap- 

 pertaining to that formation. In the superior beds I have not 

 detected a single species, nor does any exist upon our coast. 



[42] 



