﻿15 1 Florida Oligocene Shells 33 



Chipola marls, Bailey's Ferry, Florida. 

 Cornell University collection. 



Scaphopoda 



Dentalium santarosanum, n. s. 

 PI. VIII, fig. 6. 

 Shell rather thin, small, so slightly curved as to appear at 

 first sight straight ; smooth ; more or less shining ; without 

 sculpture ; lines of growth very faintly visible, cross section of 

 shell circular. 



Length of largest specimen 7; greatest diameter 1.5 mm. 

 Oak Grove, Santa Rosa County, Florida. 

 Mr. Aldrich's collection. 



Cadulus Clartz, u. s. 

 PI. VIII, fig. 7. 

 Shell slender, small, curved ; cingulum more or less differ- 

 entiated, varying with individuals ; cross section of shell ellipti- 

 cal. 



Length of shell 5 ; greatest diameter 1 mm. 

 Oak Grove, Florida. 

 Mr. Aldrich's collection. 



Pelecypoda 



Perna solereperta, n. s. 

 PI. VIII, fig. 8. 



Shell very inequilateral, small, compressed, with the general 

 outline of P. ephippium Linn. Unfortunately, the only valve 

 found is broken, but the portion of the cardinal area that remains 

 shows distinctly two of the series of cartilage pits. Exterior of 

 the shell with numerous fine radiating riblets not appearing over 

 the earlier 5 mm of the shell. 



Length of shell 12 ; width 8 mm. 



This appears to be the first true Perna found in the Florida 

 Tertiaries. 



Oak Grove, Santa Rosa County, Florida. 



Cornell University collection. 



