TABLE OF CONTENTS. 



Letter of transmittaj j3 



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



and Zoologist jg 



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Chapter IV.— Report upon the collections of Batrachians and Reptiles made in portions 

 of Nevada, Utah, California, Colorado, New Mexico, and Arizona during 

 the years 1671, 1872, 1873, and 1874, by Dr. H. C. Yarrow 009 



Chapter V. — Synopsis of the Reptiles and Batrachians of Arizona, wrrn critical and 



FIELD NOTES, AND AN EXTENSIVE SYNONO.MY, BY Dr. ELLIOTT COUES, U. S. A 585 



