GASTEROPODA OF TBE LOWER GREEIf MARLS. 



27 



This gives for the moUuscan fauna of New Jersey, including the 

 Brachiopoda: 



Brachiopoda 



Lamellibranchiata 



Gasteropoda 



Cephalopoda 



Total 



Giving a total of 441, or deducting the two naticas and gryphsea, which 

 are counted also in the Middle Marls, a total of 428 described species. 

 Were the localities critically examined many others would undoubtedly be 

 obtained, as a number of casts are already recognized as distinct from any 

 of the described forms, both in the Cretaceous and Eocene beds. 



Of the Brachiopoda above enumerated the Terehratula Harlani and 

 TerebratuUna lachryma are also known to occur in South Carolina, and 

 T. floridana is common at some localities in Alabama. Of the Lamelli- 

 branchiates of the Lower Marls, three species are known in Europe, and 

 the number attributed to certain American States are as follows: 



Species. 

 Alabama 41 



Tennessee 21 



Mississippi 21 



Texas.. 6 



North Carolina 20 



Dakota ._ 4 



A large number are found in States not here mentioned. Six of those 

 from the Middle Marls also occur in other States, and but one species from 

 the Eocene layers, Crassatella alta, is known to occur outside of New 

 Jersey. In Table No. 3, the species which have been thus cited are given 

 under the States wherein they are found, and the succeeding table. No. 4, 

 gives the same for the Grasteropoda and Cephalopoda, few only of which 

 have been recognized beyond the State. 



