( 71 ) Te^rtiary Moi,i.usca of Ai.a. and Tex. 19 



Only the right valve known, resembles the recent Tellina 

 punicea Born in outline. 



PERIPLOMA. 



Periploma butleriana, no v. sp. PI. 5, fig. 3. 



Shell thin, fragile, ovate, inequilateral, very slightly gaping, 

 with a large tooth curved toward the posterior, an internal rib 

 running from base of tooth to posterior margin, a groove on the 

 anterior side of the tooth, and a slight internal folding on the an- 

 terior of the shell. 



Localities. — Butler, Ala.; Baker's Bluif, Ala. 

 Geological horizon. — Wood's Bluff section. 



Only two specimens found. The tooth is not strongly spoon 

 shaped, but rounded, and curves both upwards and to one side. 



CORBULA. 

 Corbula concha, no v. sp. PI. 5, fig. 6. 



Shell oblong, ovate, inequilateral ; surface striate ; posterior 

 somewhat produced and rounded, and the larger ; anterior ellipti- 

 cally rounded ; tooth large and oblong ; cicatrices very slightly 

 impressed ; cavity of shell rather deep. 



Locality. — Bell's Landing, Ala. 



Geological horizon. — Bell's lyanding section of the lyignitic. 



A large species of this genus. It differs from any other by its 

 smooth surface, large posterior end, and faint muscular impres- 

 sions. 



GASTROCH^NA . 



GastrochcB7ia larva, Con. PI. 5, fig. 12. 



Locality. — Claiborne sand bed, Claiborne, Ala. 



