PLEIOCEE"E FOSSILS. 17 



fossil. The ends of the short branches are thickened and rounded. The arborescent form 

 and surface covered with unequal, irregularly arranged and somewhat angular pores, as 

 seen in Pig. 18, are sufficiently characteristic. 



Plate IV., Fig. 15. Fragment of Coral. 



" 16. The same magnified to show the pores, with a section of the lower part exposing 



the tubes. 

 " 17. Fragment from the Meiocene of Virginia, natural size, to show the branching. 



Locality. Smith's, Goose Creek. 



Museum, College of Charleston, 8. C. 



BRACHIOPODA.— Dumeril. 



OEBICULA.— Cuv. 



OEBICULA LUGUBRIS.— Con. 



Plate Y., Fig. 1. 



Orbicula lugubris, Con., Foss. Ter. For., p. 75, Plate XLIIL, Fig. 2. 



0. testa, ovato-orbiculata, depressa • valva superior e, lamellosa, vertice sub-mar •ginali. 



Description. Shell oblong-ovate, depressed ; superior valve with the vertex towards the 

 posterior margin. 



This fossil is easily distinguished by the dark brown colour and corneous structure of the 

 upper valve, the only part found. Behind the apex, the surface is marked by some obsolete 

 radiating lines. The rest of the shell is smooth, or lamellar. 



Plate Y., Fig. 1. Fossil, natural size. 



Locality. Dr. Davis's, Pee Dee River. 



Museum, College of Charleston, S. C. 

 5 



