74 PROCEEDINGS OF THE ACADEMY OF 



CRISTELLARIA, D'Orbigny. 

 C. ? rotella, C, Amer. Journ. Science, ii., 2d series, 399, f. 4. Florida. 

 Cristellaria? rotella, D'Orbigny, Prodromus, ii. 406, 1300. 



NEMOPHORA, Conrad. 

 N. Floridana, (Nnmmulites) C, Amer. Journ. Sci., ii., 2d series, 399, f. 3. 

 Florida. 

 Cristellaria fFloridana, D'Orbigny, Prodromus, ii. 406, 1301. 



ORBITOLITE8, Lam. 

 O. (Nummulites) Mantelli, Morton, Org. Rem. Cretac. Group, 45, 5, 9. St. 

 Stephens, Ala., S. C, Miss. 

 Orbitpides Mantelli, D'Orbig., Prodromus, ii. 406. 

 O. supera, C* Vicksburg, Miss. 



Echinodermata. 



ECIIINIDjE. 



SISMONDIA, Desor. 

 S. alta, C, Proc. A. N. S., 1865, N. C. Emmons, Geol. N. C, 308, 247, 8. 

 S. crustuloides, (Scutella) Morton, Org. Rem. Cretac. Group, 77, 15, 10. S. C. 



Desor , Synop. des Echin. 227. 

 S. Lyelli, (Scutella) C, Journ. A. N. S., vii. 152, Ala. Desor., Synop. des 



Echin. 225. 

 S. marginalis, C, Proc. A. N. S., 1865, near Charleston, S. C. 

 S. pileus-sinensis, (Scutella) Ravenel., Proceed. A. N. S. ii. 97. S. C. 

 S. Plana, C. S. C. 



MORTONIA, Desor. 

 M. Rogersi, (Scutella) Morton, Org. Rem. Cretac. Group, 77, 13, 3. Alabama. 

 Desor., Syn. des Echin. 231. Clark Co., Ala. 

 Laganum Rogersi, Agass., Catal. Syst. 6. 

 M. Jonesii, (Scutella) Forbes, Quart. Journ. Geol. Soc, i. 440. Georgia. 



MELLITA, Klein. 

 M. Caroliniana, (Scutella), Ravenel, Proc. A. N. S. 1, 81. S. C. 



MACROPHORA, Conrad. 

 M. macrophora, (Scutella), Ravenel, Proceed. A. N. S. 1, 81. S. C. 

 M. Raveneli, C. S.C. 



Smaller than the preceding, suborbicular, with an obtusely ovate perfora- 

 tion. 



PYRGORHYNCUS, Agass. 



P. Gouldii, Bouve, Proc. Bost. Soc. Nat. Hist., ii. 192, and iv. 2. Desor., 

 Synop. des Echin. 299. Georgia. 

 Nuc. Mortoni, Conrad, Journ. Acad. Nat. Sci., ii. series, 40. 



CCELOPLEURUS, Agass. 



C. depressus, C. , n. s. S. C. 



C. infulatus (Echinus) Morton, Org. Rem. of Cretac. Group, 75, 10, 7. Desor., 



Syn. des Echin. 98, S. C. 



CLYPEASTER, Lam. 

 C. Jonesii, (Scutella) Forbes, Quart. Journ. Geol., i. 440. Desor., Syn. des 



Echin. 243. Georgia. 



* Smaller than the preceding and comp natively thicker, without the raised central point. Di- 

 ameter 1320 inch. This species is readily distinguished by the convex centre, and is limited to 

 the Oligocene strata. ., 



[April, 



