10 Bulletin American Museum of Natural History. [Vol. XXXVI, 



ascent of the Paramillo is our most difficult and noteworthy piece of actual 

 exploration in Colombia. On this latter trip he was ably assisted by 

 Howarth Boyle. 



Cherrie's extended experience in South America made him an invaluable 

 associate on- our trip in the Bogota region. Particularly effective as a 

 collector he was no less efficient in dealing with those details of transporta- 

 tion and subsistance which form so important a part of field-work in thinly 

 settled regions. He, too, was chosen as a representative of the Museum 

 on the Roosevelt Expedition. 



Allen's admirable descriptions of the country which he explored show 

 how well qualified he was for work of this kind, and serve to double our 

 regret that an illness contracted in the unhealthful Choco region, should 

 have necessitated his return to New York just as he was approaching the 

 most productive part of Colombia. 



Howes, O'Connell and Ring made up in enthusiasm what, at first, they 

 lacked in experience, and to them we owe many specimens of birds and 

 mammals which would not otherwise have been obtained. 



I am sure that no other member of our various Colombian expeditions 

 will feel that I am giving undue praise to any one member of it when I say 

 that the best qualities each one exhibited were all present in Fuertes. 

 Officially the artist of the expeditions with which he was connected, he filled, 

 in truth, whatever position seemed most to require his attention. In 

 looking for an opportunity to help others, he rivalled Cherrie, while his 

 unbounded enjoyment of the experiences of his associates, as well as his own, 

 made him an ideal companion. 



To the fellow-workers who have rendered me assistance in the prepara- 

 tion of this paper, I am indebted no less than to those who have aided us 

 in the field. For the loan of specimens used in comparison, I have to thank 

 Dr. Chas. W. Richmond, of the United States National Museum, Mr. 

 E. W. Nelson, of the Biological Survey, Dr. Witmer Stone, of the Academy 

 of Natural Sciences of Philadelphia, Mr. Outram Bangs, of the Museum of 

 Comparative Zoology, Mr. Thomas E. Penard, of Arlington, Mass., Mr. 

 L. A. Fuertes, of Ithaca, N. Y., Mr. W. E. Clyde Todd, of the Carnegie 

 Museum, and Mr. Charles B. Cory, of the.. Field Museum. Mr. Phanor 

 Eder, author of the authoritative work on Colombia in the Fisher-Unwin 

 series, has supplied me with numerous references to the literature of Colom- 

 bian exploration and loaned me from his extensive Colombian library, a 

 number of works not elsewhere available. Professor Isaiah Bowman, 

 Director of the American Geographical Society, has given me access to the 

 Colombian maps in his charge, and supplied much of the data on which 

 the map of Colombia accompanying this paper is based. 



