156 Bulletin 31 156 



the type made while visiting the Academy some time ago. 



We have obtained no specimens of this species nor have we 

 seen an}- in other collections. 



Psammobia eborea Conrad, PI. 48, Figs. 8- 11 



P. eborea Con., Foss, Sh. Tert. Form., 1833, p. 42. 



P. { Psamnwcola) eborea Con. Amer. Jr. Conch., vol. i, '65, p. 4. 



P. eborea Dall, Trans. Wag., Ill, 1900, pp. 976, 978. 



Conrad's original description. — Shell oblong-oval, compressed ; pos- 

 terior side longest and obliquely truncated at the end ; dorsal margin 

 straight ; beaks slightly prominent. 



Speaking of the incremental ridges in a lower Eocene form 

 Q>i Psammobia Dall continues: "The latter often form in P. 

 ebo7'ea small, sharp, concentric waves dorsally, but not raised 

 laminae, as in P.filosa. 



This is very close to P. ozarkana Har. , (these Bulletins, vol. 

 2, p. 257, pi. 18, fig. 14, pi. 19, fig. 8) but is less elongate &c as 

 there noted. 



This is by no means so rare as the preceding species. There 

 are several specimens at the Philadelphia Academy and our own 

 collection contains three. 



7>/^.— Phila. Acad. Nat. Sci. 



Horizon. — Claiborne Eocene. 



Specimens Jig wed. — Paleont. Museum Cornell Univ. 



Locality. — Claiborne, Ala. 



Egerella triangulata Lea, PI. 48, Figs. 12, 13 



Egeria triangulata Lea, Cont. to Geol. , 1833, p. 51, pi. i, fig. 20. 

 E. Bucklandii, ibid, p. 52, pi. i, fig. 21. 

 Donax Umatilla Con., Foss. Sh. Tert. Form., 1833, p. 42. 

 E. donacea Con., Amer. Jr. Conch,, vol, i, 1865. p. 146, pi. 11, fig. 12. 

 f Donax {Egerella') veneriformis var. tiga de Greg., Mon Faun. Eoc. 

 Ala., 1890, p. 222, pi. 35, figs. 4-9. 



Led' s original description. — Shell triangular, inequilateral, smooth, ob- 

 tusely angular before, acutely angular at top, gibbous over the umbo — anter- 

 ior to which it is flattened; substance of the shell rather thin ; posterior and 

 anterior slopes flattened ; beaks elevated, pointed, incurved ; basal margin 



