PLEIOCENE FOSSILS. 121 



Description. Shell elongated; apex acute; whorls convex with numerous revolving 

 striae, the middle one prominent, the large whorls flattened, those near the apex more 

 convex; transverse wrinkles distinct only on the lower whorls. 



It is easily distinguished from T. plebia, of Conrad, by the flattened whorls; it is also 

 a larger shell, and not so profoundly turrited. 



Plate XXVI. Fig. 7. 



Locality, Darlington. Museum, College of Charleston. 



TEEEBELLUM EXALTATA. 



Plate XXVI. Pig. 8. 



Turritella exaltata, Con,, Acad. Nat. Sci., Vol. 8, p. 188. 



T. testa subulata, valde elongata, gradatim versus spiram attenuata; anfractibus convexis, 

 spiratim striatis, sulcatis; sutura profunda. 



Description. Shell subulate, profoundly elongated, very gradually tapering towards 

 the spire; whorls convex, spirally striated, grooved near the base of each and with a 

 raised rib on each side of the groove, the rib which margins the suture, is also delicately 

 grooved; suture profound. 



We have but two specimens of this shell, both of which are without the apex or spire ; 

 it must from its gradual tapering, attain a great length. 



Plate XXVI. Fig. 8, Natural size. 



Locality. Pee Dee. Museum, College of Charleston. 



32 



