EXOGYRA COSTATA CANCELLA1A. 55 



U. S. Geol. Survey coll. 6879. — Cut of Southern Railway, 2$ miles west of Corinth, Alcorn County, Miss. Selma 

 chalk, toward base of Exogyra costata zone. 



IT. S. Geol. Survey coll. 6927. — Selmer-Adamsville road, 3 miles west of Adamsville, McNairy County, Tenn. 

 Impure phase of Selma chalk near base of Exogyra costata zone. 



Specimen No. 8358 of the State Natural History Museum, Springfield, 111. Excavation for pier of Illinois Central 

 Railroad bridge near Cairo, 111. Exogyra costata zone. 



In North Carolina the variety has been obtained from the following four localities: 



U. S. Geol. Survey coll. 3353. — Kellys Cove Landing, Cape Fear River, 46£ miles above Wilmington. Peedee 

 sand (toward base). 



U. S. Geol. Survey colls. 3450, 5370. — Indian Wells Landing, Cape Fear River, 41 miles above Wilmington. Peedee 

 sand (toward base). 



U. S. Geol. Survey colls. 3449, 5371. Black Rock Landing, Cape Fear River, 37 miles above Wilmington. Peedee 

 sand (toward base). 



U. S. Geol. Survey coll. 5367. — Near Sparkleberry Landing, Black River, 39J miles above Wilmington. Peedee 

 sand (toward base). 



