PLEIOCBNE FOSSILS. 53 



NDCU L A P R X I M A . — S a y . 



Plate XVII. Figs. 7 to 9. 



Nucula proxima, Say, Jour. Ac. Nat. Sci., Vol. 2, p. 270. 



Nucula obliqua, Say, (non. Lam.) Am. Jour., Vol. 2, p. 40. 



Nucula proxima, Say, Conrad's Am. Marine Conch., p. 31, tab. 6, fig. 2. 



N. testa ovata, laevigata, concentrice rugosa; latere buccali brevissirno; latere anali sub- 

 elongato obtuso; lunula cordata, sub-obsoleta; labro crenato. 



Description. Shell ovate, smooth, concentrically wrinkled; buccal margin very short; 

 anal side somewhat elongated, obtuse; lunule cordate almost obsolete; lip crenate. 



The very short buccal side, and pearly interior are conspicuous characters of this 

 beautiful little shell. It belongs to the actual fauna of our coast, and is also firund fossil 

 in the Meiocene of Virginia. 



We have placed N. obliqua, Say, as a synonyme of this species, having but little doubt 

 of their identity. 



Plate XVII. Fig. 7, Interior of right valve. 

 " 8, Exterior of left valve. 

 " 9, Magnified hinge and teeth. 



Locality. Darlington District. 



Museum, College of Charleston. 



NUCULA ACUTA. — Say. 

 Plate XVII. Figs. 10 to 12. 



Nucula acuta, Con., Conrad's Am. Marine Conch., pi. 6, fig. 3. 

 Nucula acuta, Con., Foss. Ter. For., p. 57, pi. 30, fig. 2. 



JV. testa sub-lanceolata, inaquilateralis, concentrice striata; latere buccali brevi, rotundato; 

 latere anali producto, rostrato, sub-recurvo; lunula lanceolata. 



