J20 CRETACEOUS PALEONTOLOGY. 



147*. Lying above the .bed containing such an , abundance of 

 Belemnitella there are about ];8, inches Qf gray, sandy marl, whose 

 fauna contains a larger number of spepies, although the number 

 oi individuals is very much sipaller:^ . The. fqllawing species have 

 been identified: ■ . 



PELECYPODA. 



Cucullaea antrosa Mort. 

 Bxogyra costata Say. 

 Pecten mhMeldi n. sp. 

 Veniella trigona 'Gabb. 

 Tenea paralis Con. 

 Cardium spillmani Con. 



Ga'stropoda. 



Margarita abyssima (Gabb.). 

 L,unatia halli Gabb. 

 Anchura pennata Mort. 



CephaIvOpoda. 



Beletnnitella americana Mort. 



147*. This bed is about i foot in thickness and contains a 

 larger fauna than either of the two lower horizons. It is still a 

 sandy marl, but the glauconite content is larger than in the beds 

 below. In the fauna of this bed Gryphaea is again abundant, but 

 Belemnitella is one of the less common species. The following 

 species have been identified : 



Branchiopoda. 



Terehraiella plicata Say. ' 



Vermes. 



Hamulus lineatus n. sp. 



PEI/ECypoda. 



Cucullaea antrosa Mort. 

 Axinea subaustraHs (d'Orb.). 



