66 POST-PLEIOCENE FOSSILS. 



Pyrula perversa, Reeve, Conch. Icon., pi. 3, fig. 13. 



Pyrula perversa, Ravenel, Cat. Coll. Shells, p. 15. 



Pyrula perversa, Wood, Index, pi. 26, fig. 88. 



Pyrula perversa, L. R. Gibhes, Tuomey's Geol. So. Ca., appendix, p. xx. 



Busycon perversum. Con., Pro. Acad. Nat. Sci., Vol. 7, p. 31. 



Busycon perversum, Tuomey Sf Holmes, Pleiocene Foss. So. Ca., p. 145, pi. xxix, fig. 3. 



Busycon perversum, H. S^ A. Adams, Gen. Recent Mollusca, Vol. 1., p. 151, pi. 16, fig. 2. 



Description. Shell pear-shaped, sinistral, ventricose ; summit of each whorl inclined ; 

 prominent part of whorl coronated, tuberculated ; suture not canaliculated, but distinct. 



B. PEVERSUM is common on the coast of South Carolina. The recent shells often have 

 all the whorls coronated at their summits. 



It is foimd in the Pleiocene of this State, and in the Post-Pleiocene of North-Carolina. 



Plate XI. Fig. 2, Natural size. 



Locality. Simmons'; Wadmalaw Sound. 



Museum, College of Charleston; Cabinet F. S. H. 



BUSYCON CANALICULATUM. — Con, 

 Plate XI. Fig. 3. 



Buccinum ampullaceum. Lister, Conch., t. 878, fig. 2. 



Murex canaliculatus, Linn, Martini, Vol. 3, p. 29, t. 67, figs. 742, 743. 



Pyrula canaliculata. Reeve, Conch. Icon., pi. 8, fig 26. 



Pyrula canaliculata, Adams, Boston Jour. Nat. Hist., Vol. 2, p. 269. 



Pyrula canaliculata, Gould, Invert. Mass., p. 294, fig. 206. 



Pyrula canaliculata, Ravenel, Cat. Coll. Shells, p. 14. 



Pyrula canaliculata, De Kay, Zool. New- York, Art. Mollusca, p. 140, pi. ix, fig. 190. 



Pyrula canaliculata, L. R. Gibbes, Tuomey's Geol. So. Ca., appendix, p. xx. 



Pyrula canaliculata, Stimpson, Shells of New-England, p. 47. 



Fulgur canaliculatum, Con., Pro. Acad. Nat. Sci., Vol. 6, p. 319. 



Busycon canaliculatum. Con., Pro. Acad. Nat. Sci., Vol. 7, p. 30. 



Busycon canaliculatum, Twowcy 4" JZb/?nes, Pleiocene Foss. So. Ca., p. 146, pi. xxix, fig. 2. 



Busycon canaliculatum, H. Sf A. Adams, Gen. Recent Mollusca, Vol. 1, p. 151. 



Description. Shell pear-shaped ; whorls flattened on the summit, covered with 

 revolving lines; body-whorl tumid, terminating in a long canal; angle of each whorl 



