56 Bui.l<BTlN 31 56 



figure given is from Dall (<?/». cit.'). 



Area harrisi Sheldon, PI. 22. Fig. 21. 



Area inornata Meyer, Bull, i, Geol. Surv. Ala., 1886, pt. II, p. 79, fig. 



24. 

 ^rra Aarmf Sheldon, Palaeontogr. Amer., vol. i, 1916, p. 21. 



Meyer'' s original description. — Trapezoidal ; anterior side truncated, 

 flat ; beak small ; ligament area very low ; teeth smallest toward the middle ; 

 covered with indistinct concentric lines ; margin entire. Locality, Clai- 

 borne, Ala. Resembles Area leevigata Caillat (Desh. An. sans verteb. , I, p. 

 905, pi. 68, figs. 23-26) from the Paris Basin but is less oblong. 



So far as we are aware no one since Meyer's time has found 

 another specimen of this peculiar form. Its generic assignment 

 seems open to doubt. The specific name was changed by Shel- 

 don because Meek and Hayden had described an Area (^Cuculleza) 

 inornata in 1858 (Proc. Phila. Acad., p. 51). 



We have herewith copied Meyer's figure. The type is doubt- 

 less in the Aldrich collection at Johns Hopkins Univ. 



Leda semen Lea, PI. 23. Figs. 1-4. 



Nueula semen Lea, Cont. to Geol., 1833, p. 200, pi. 6, fig. 214. 



Nueulana semen Con., Am. Jr. Conch., vol. i, '65, p. 13.. 



? Nueula mieronata Con., Proc. Phila. Acad. Nat. Sci., vol. 4, 1847, p. 

 297 ; Jr. Phila. Acad., vol. i, 1849, p. 128, pi. 14. 



Nueulana semen Cossm., Notes Compl. 1893, p. 15. 



Nueulana semen Aid., Bull, i, Gaol. Surv. Ala., '86, p, 49. 



Leda semen Dall, Trans. Wag. &c., '98, p. 578. 

 Lea's origifial deseription. — -Shell transversely elliptical, rather in- 

 flated, furnished with large concentric folds, and with a deep furrow on the 

 anterior slope, rostrate behind ; substance of the shell rather thin ; lunule 

 and escutcheon both lanceolate ; beaks small, rather pointed ; margin en- 

 tire ; nacre not pearly. 



Lea had but one immature specimen and that is now lost. 

 However, there is no danger of incorrect identification when 

 dealing with this species. See the illustrations. 



Type. — Was from Claiborne sands, but is lost. 



Specimens Jigured. — Paleont. Mus. Cornell Univ. 



Localities and horizons. — St. Maur'ice : Tisbon, Hamilton 

 Bluff, Ala. ; Piping Tree, Va. ; 3 and 6 miles W. N. W. of 

 Orangeburg, S. C. Claiborne: Claiborne sands. 



