213 St. Maurice and Ci^aiborne Pei.ECypoda 213 



PIRATE 12 



Figure Page 



1,2. Anoinia navicelloidesvzx. hanuuetti'Rat.y 20x14 mm 18 



Exterior and interior of upper valve ; Hammett's Branch, L,a. 



3-8. Plicatula filarnentosa Con., X 2 18 



Claiborne sands, Claiborne, Ala. 



9-12. P.fil. var. concentrica Dall, X .2 19 



Columbus, Tex. 



13-16- P. fil. \a.r. planata A\&., X2 19 



Wautubbee, Miss. 

 17. The same, enlarged about 4 times ; Hickory Miss. 



