PibiAtOR Y NOTH 
The first paper in the present volume of the Memoirs, from the pen of Prof. 
C. V. Hartman, embodying some of the results of his researches upon the Pacific 
Coast of Costa Rica, was published in the summer of 1907. It had been intended 
to immediately follow it by a monographic paper upon the Osteology of the 
Chalicotheres, but the fact that new discoveries of material had been made, and 
ever-multiplying cares and duties on the part of the writer, prevented the imme- 
diate execution of this purpose. The matter was long held in abeyance, and it 
was not until the summer and fall of 1913 that it became possible to bring the 
second memoir to a conclusion. It is now presented to the attention of students 
in the belief that it will be found to supply more complete information in regard to 
this subject than is contained in any treatise which has thus far been published. 
W. J. HOLLAND. 
Carnecie Museum, 
January, 1914. 
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