PART II. 



Geological Distribution ai)d Localities of Species, 



When the species mentioned are in my cabinet, or that of the State 

 University or quoted from some previous author, appropriate signs are 

 used as follows : 



My cabinet, ..... 



State collection, ... . . . J 



Prof. A. Heilprin, . . f 



T.A.Conrad, ... . . || 



S. G. Morton, ... 



Dr. O. Meyer, ... If 



Nearly all the species, however, are either in the State University 

 cabinet or my own. For the stratigraphical succession of the different 

 groups, the reader is referred to Dr. E. A. Smith's explanatory article 

 accompanying this report. 



TABLE 1. 

 WHITE LIMESTONE GROUP. 



This formation needs more careful examination, especially in its upper 

 beds. The western part of Alabama shows the beginning of the change 

 that takes place in Mississippi. The most peculiar "find" in connection 

 with this group is the presence of Ven. planicosta, Lam. One large 

 valve was found on the top of a high Limestone hill, five miles north of 

 Claiborne, by the writer. 



Many of the shells exist only as casts, rendering the absolute deter- 

 mination almost impossible. 



Following the names, column one shows those found in the vicinity of 

 Claiborne. 



