PLATE XXVI. 



Page. 



Pholadomya papyracka M.& II lit; 



Fig. 1. Left valve of type specimen (after Meek). 



Pholadomya Colorado knhih n. sp 116 



Pig. 2. Left valve of a small specimen with the surface partly restored from 

 other examples. 



Nat. Mus. Cat. Invert. Fobs., 22895. 



Anatina LLNEATA n. sp 117 



Nat.Mus.Cat. [nvert. Fobs., 22806. 

 Fig. 3. Left valve of a large broken specimen. 



A. A small right valve from a gut ta perch a impression of a rial nra I mold. 



Liopistha (Psilomya) meeki White IIS 



Fig. 5. Left valve retaining portions of fehe k h o 1 1 and showing faint punc- 

 tate radiating lines. 

 Nat. Mus. Cat. Invert,. Fobs., 22897. 



6. Dorsal view of another specimen f<> show convexity of the valves. 



7. Right valve of one of the type specimens. 



Nat, Mns.Cat. [nvert. Foss.,8647. 



Liopistha (Psilomya) concentrica d. sp 1 1!> 



Nat. Mus.Cat. Invert. Foss., 22898. 

 Fig. H. Left valve. 



9. Dorsal view of same. 

 10. Right valve 



Liopistha (Psilomya) elongata n. sp Ill) 



Nat. Mils. Cat. [nvert. Foss., 22899. 

 Fig. 11. ^iOft valve. 

 12. Right valve. 



244 



