4 PKOOEEDINGS OF THE NATIONAL, MUSEUM yux.T^ 



Pelecypoda — Continued, 



Glycymeris (?) greenensis Stephenson (numerous). 



Area (Barbatia) Madenensis Stephenson. 



Area {Barbatia) lintea (Conrad). 



Ostrea sloani Stephenson. 



Anomia olmstedi Stephenson. 



Veniella mulUnensis Stephenson. 



Crassatellites species. 



Lucma species. 



Cardium donohuense Stephenson. 



Cardium aff. C. vaugJiani Stephenson. 



Cardium marsense Stephenson. 



Cyprimeria species. 



Tellina simplex Stephenson. 



Tellina elliptiea Conrad ?. 



Tellina species. 



Linearia carolinensis Conrad?. 



Cymbophora trigonalis Stephenson. 



Cymbophora species (large). 



Corbula oxynema Conrad. 



Corbula subgibbosa Conrad. 



Corbula s^tedes. 



Unidentified pelecypods (several species). 

 Scaphopoda : 



Dentalium, leve Stephenson. 

 Gastropoda : 



Nerita species. 



Epitonium species. 



Lunatia carolinensis Conrad. 



Lunatia species. 



Oyrodes ?. 



Turritella species. 



Pugnellus species. 



Odontobasis (?) greenensis Stephenson. 



Unidentified gastopods (several species). 

 Vertebrata : 



One fish vertebra. 



With the exception of the new species, Cardium {Trachy cardium) 

 marsense, all of the specifically identified forms in the list occur in 

 the Snow Hill marl member of the Black Creek formation of the 

 Carolinas, and even the new species may be represented there by 

 imperfectly preserved molds and casts. The containing bed is there- 

 fore referred to that member, as is also the entire Cretaceous portion 

 of the section, embracing 50 or 55 feet of strata. The beds in their 

 present condition lack the calcareous character of the typical beds 

 of the member, but the fossil-bearing bed was originally calcareous, 

 the shells and other calcareous material having been subsequently 

 replaced by silica. 



The photographic illustrations used in this paper were made in the 

 photographic laboratory of the U. S. Geological Survey by W. O. 

 Hazard, and the photographs were retouched by Miss Frances 



