2 POST-PLEIOCENE FOSSILS. 



ous, alternately larger and smaller, denticulated and rough on the edges, sides prominently 

 papillated ; partitions between the stars thin and plaited by the alternate position of the 

 lamellae of the adjacent stars. 



This coral was first described by Mr. Conrad, from a fossil specimen found near New- 

 bern, North-Carolina. It is common in the recent state on this coast and often incrusting 

 other bodies. 



Plate I. Fig. 2. Museum, College of Charleston; Cabi?iet F. S. H. 



ASTR.EA CEASSA. — (Neio Sjxcics.) 

 Plate I. Figs. 3 and 3a. 



Description. Corallum thick, not incrusting; stars orbicular, sometimes polygonal, 

 irregular, deep; lamellae about twelve, rough, denticulated. 



The cells of this coral resemble A. Marylandica, of Conrad; but, unlike that species, 

 it is thick and not incrusting. 



Plate I. Fig. 3, Coral, natural size. 

 " 3a, Cell, magnijied. 



Locality. Charleston. Cabitiet F. S. H. 



ASTR^A PET EOS A. 



Plate I. Figs. 4 and 4a. 



Astraea petrosa, Daria, Zoophytes, U. S. Exploring Expedition, Vol. 8, p. 238. 



Description. "Convex; corallum sub-cellular, firm; in a transverse section the stars 

 orbiculate, commonly oblong, one-and-a-half to three lines broad and one-and-a-half to five 

 lines long; many-rayed, rays very thin, with the cellules simple; septa a line thick and 

 quite solid." — Daria. 



This fragment, of which we have given an outline in Plate I, Fig. 4a, with a drawing of 



