TABLE OF CONTENTS. 



Page. 

 Letter op transmittal 13 



Introductory letter, by Dr. H. C. Yarrow, Acting Assistant Sdrgeon, U. S. A., Surgeon 



and Zoologist I 5 



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Chafier VI.— Report upon the collections of Fishes made in portions of Nevada, Utah, 

 California, Colorado, New Mexico, and Arizona during the years 1871, 

 1872, 1873, and 1874, by Prof. E. D. Cope and Dr. H. C. Yarrow C35 



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