22 [Feb., 1846. 



(Mitra,) Con. C. pyruloides, (Turbhiella,) Con. C. prozten uis, Con. 



_ . ,, f Voluta prisca, Con. 



(7. doliata, 



{ 



V. Cooperii, Lea. 

 This genus, so far as I know, occurs only in the Eocene strata. 



Cardium. 



Cardium Nicolleti. Plate I, fig. 14. Vide Proceed. Acad. N. S. vol. 1 

 p. 33. 



Anomia. 



Anomia jugosa. Plate 1, fig. 14. Vide Proceed. A. N. S. vol. 1, p. 310. 



POLYPARIA (SILURIAN.) 

 Cyathophyllum, Lam. 



C calophyllum? pustulalum. Plate 1, fig. 24. Turbinate, somewhat 

 curved towards the base, and with numerous elevated pustules, most of 

 which have a central perforation: 



Locality. State of Ohio, in Silurian limestone, Dr. Riley. 



The rays are visible on only a small portion of the specimen, the rest 

 being imbedded in compact gray limestone. 



EOCENE SPECIES. 



TtlRBINOLIA. 



Turbinolia elaborate,. Plate 1, fig. 30. Subcuneiform ; base acute, in- 

 curved, lamellae thin, numerous, branched, smooth becoming very irregular 

 or sinuous where they approach the centre; sides profoundly sulcated or 

 ribbed, the ribs densely and distinctly porous, many of them divaricated, 

 the intervals with remote transverse lamella. 



Locality. Near City Point, Virginia. 



T. pileolus. Plate 1, fig. 26. Vide Proceed. A. N. S., vol. 1, p. 327. 



Madrepora. 



Madrepora vermiculosa. Ramose, branches cylindrical ; cells remote, un- 

 equal, a little prominent, interstices with thick, equal, vermicular striae, 

 minutely granulated. 



Locality. Occurs with the preceding. 



This is a rare species ; the undating striae are large and ornamental. 



DEVONIAN SHELLS. 

 Monotis, Bronn. 

 This genus occurs in the Devonian shales. I have not observed a species 

 in any other formation. 



Monotis radians. 

 Syn. Plerninca radians. Journ. Acad. Nat. Sci. vol. viii. p. 252, pi. 15 

 fig. 1. 



