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. 
