51 St. Maurice and Claiborne Pelecypoda 51 



Ijoth from 400 and 1200 ft. ; Wautubbee, Miss, (var); Claiborne 

 stage, — Ferruginous sands at Claiborne, Ala. 



Vaughan cites this species from various localities in the Mc- 

 Bean formation in Georgia. 

 Glycymeris sabinensis, n. sp., PI. 21. Figs. 8-10 



Characterization. — Shell small, 6^/j'rj'/;/6'm-like in general, but 

 with deltoid ligamental area unusually deep and very limited lat- 

 erally for adult specimens, flanked on either .side by a pronounced 

 cardinal area, features creating, at first sight, a Liniopsis-Vike as- 

 pect ; exterior ornamented by numerous well-marked, broadly 

 rounded ribs over which the fimbriate growth lines sweep in ex- 

 quisite beauty and regularit}' . 



Twenty- five years ago, in a MS report, pi. 7, fig. 8, on the 

 Tertiary Mollusca of Texas I illustrated this species, but having 

 only one shell, I refrained from naming it, thinking perhaps it 

 should be referred to the young of some form not then known to 

 me. However, Mr. A. C. Veatch, while assisting on the Louis- 

 iana Survey, found a large amount of interesting fossils along the 

 Sabine River during his solitary canoe trip in 1900. In working 

 over this material recently a goodly number of specimens of this 

 species was found in with Limopsis avicidoides. They are from 

 the Texas side of the Sabine about on the Tp. line between 4 and 

 5 N., La. land .survey. Hence thej" are of St. Maurice Eocene 

 age. 



Types. — Depo.sited in the Paleont. Mus. Cornell Univ. 



Localities. — ElmCr. , Lee Co. ; Sabine River as above stated. 



Area rhomboidella Lea, PI. 21. Figs. 12-17. PI. 22. Figs. 1-3. 



A.rhomboidella Lea, Cont. to GeoL, 1833, p. 74, pi. 2, fig. 52. 

 Anonialocardia rhomboidella Con., Jr. Am. Conch., vol. i, 1865, p. 11. 

 Area {Cnculla-arca)cuculloides de Greg., non Con., Mon. Faun. Eoc. 



Ala., 1890, p. 195, pi. 24, figs. 17-20, 

 Area rhomboidella Coss. (in part). Notes Compl. 1893, p. 17. 

 Area {Seapharca) rhomboidella DaU, Trans. Wag. &c., Ill, '95, p. 625. 

 Area rhomboidella Sheldon, Paleont. Amer., vol. i, 1916, p. 30, pi. VII, 



6-10. 



Lea^s original description. — Shell rhomboidal, very inequilateral, 

 compressed at base, longitudinally and closely ribbed ; substance of the 



