PREFACE. 



The late Herbert H. Smith, curator of the Alabama State 

 Museum of Natural History University, Alabama, made exten- 

 sive collections in the Tertiary of Alabama, and at the time of 

 his sudden and lamented death was engaged in classifying and 

 arranging his material. The collections were made on joint ac- 

 count for the Carnegie Museum of Pittsburg and the Alabama 

 Museum of Natural Histor5^ The condition of the material 

 made it necessary to go over all of it, and classify it for division 

 as well as to describe what was considered new. The writer has 

 also added a few new species from his collecting. It is regretted 

 that Mr. Smith was not spared to complete his labors, because 

 his ability in specific determinations was almost unique. The 

 tj'pes of the new species collected by him are all in the Univer- 

 sity" Museum. We are indebted to Dr. W. H. Dall, Dr. Paul 

 Bartsch, Prof. G. D. Harris and Dr. E. A. Smith for generous 

 aid in both specific and generic determinations of doubtful forms. 



