WASHINGTON, D. C, Jan. 14, 1901. 



Prof. W. B. SCOTT, 



Princeton University, 



Princeton, N. J. 



Dear Sir : 



I have the honor to transmit herewith for publication a brief paper 

 on "the marine cretaceous invertebrates obtained by the Princeton ex- 

 pedition to Patagonia in 1899." 



The collection was with your permission delivered to me for study 

 by Mr. J. B. Hatcher in October, 1899, and its examination and descrip- 

 tion have continued at intervals since that time as official and other 

 duties permitted. The fossils proved to be unusually interesting from 

 the fact that they represent a facies of the Cretaceous fauna not hitherto 

 described from South America. There are about 40 species of Mollusca 

 in the collection, of which 31 are sufficiently well represented to be named 

 and described. These indicate the Lower Cretaceous age of the beds 

 from which they were derived. 



Very respectfully, 



T. W. STANTON. 



