373 'I'he Oligocene of the Southern United States 63 



Nuaila chipolana Dall. 

 Leda linifera Con., var. chipolana Dall. 

 Voldia /rater Dall. 



Cardita {Carditamera) refia Con. var. (?). 

 Crassinella triangida Dall, 

 Crassatellites detistis Dall. 

 Cardium {Papyridea) bidbosnm Dall. 

 '' chipolanuni Dall. 

 " (2 species indet.). 

 -\-Chama (sp. indet.). 

 Venus Biirnsii Dall. 

 ' ' Langdoni Dall. 



Donax cf . cinpolajiiim, var. curtula Dall. 



*' var. oi chipolana (?). 

 Siliqva subtzqualis Gabb. 

 Solen cf. aviphistemnia Dall, (fragment). 

 Maflra chipolana Dall. 

 Spisiila {Hetnifna^ra) dodona Dall. 

 Corbnla chipolana Dall. 



" heterogenea (?) Guppy. 

 PanopcBa Whitjieldi Dall. 

 Gastrochana ovata Sow., var. rotiinda Dall. 

 Miltha (sp. indet.). 



Aligena pustulosa Dall. , 



Tellina {Atigulus) acosmita Dall. 



" oi. flexuosa Say. 

 Syjidosniya triangulata Dall. 

 The locality of the following species is doubtful; 



Strombiria eugrammata Dall, (ms.). 

 Murex mississippiensis Con. 



Z"/^^ Alum Bluff beds. The Alum Bluff bed, so named by 

 Dr. Dall in 1891, consist of light colored sands, cross-bedded, 

 especially a few feet above the base. A number of Chipolan species 

 have been reported from the lower part of the deposit. In the 

 sands are occasional clayey layers, which, in the lower part of the 



