﻿34 Bulletin 21 152 



Ve7iericardia chipolana, n. s. 

 PL VIII, fig. .9. 



Shell thick, small, rounded, inflated, with about seventeen 

 narrow, elevated, radial ribs, which have an accompanying 

 thread at the base on each side of the interspaces ; the interspaces 

 are somewhat narrower than the ribs ; sculpture on ribs nodular 

 or slightly imbricated ; lunule extremely small, sharply im- 

 pressed ; beaks pointed, full, nine-elevenths of the total length 

 from the posterior end of the shell ; interior margin fluted. 



Length of shell 11 ; height 10; diameter of one valve 

 4.5 mm. 



Chipola Oligocene, Bailey's Ferry, Florida. 



Cornell University collection. 



Corbula Antonitz, n. s. 

 PL IX, fig. 1. 



Shell very thick and solid, inflated, nearly equilateral, 

 rounded in front, compressed and pointed behind so as to look as 

 if pinched, and having a well-defined carina extending from the 

 back to the posterior margin ; beaks low ; sculpture of rather un- 

 equal and not very regular concentric ribs which are absent from 

 the region near the beaks. 



L-ength of shell 10; height 8 ; diameter of inflated valve 

 6 mm. 



Chipola marls, Bailey's Ferry, Florida. 



Cornell University collection. 



Codakia magnolioides , n. s. 

 PL IX, fig. 2. 

 Shell small, fragile, very inequilateral, moderately inflated ; 

 general outline elliptical ; beaks low but prominent ; sculpture of 

 very fine, even, radial ribs, extending from the beak to the mar- 

 gin, and crossed by equal, fine, rounded concentric threads. A 

 delicate and beautiful cancellation is thus made which, however, 

 can scarcely be seen without the aid of a lens. Inner margin 

 crenulate ; the ribs of the exterior are more or less visible in the 

 interior of the shell ; hinge delicate but teeth very distinct. 



