A MANUAL OF 

 LAND AND FRESH WATER 



VERTEBRATE ANIMALS 



OF THE 



UNITED STATES 



(Exclusive of Birds) 



BY 



HENRY SHERRING PRATT 



DAVID SCULL PROFESSOR OF BIOLOGY IN HAVERFORD COLLEGE, PA.; INSTRUCTOR IN COMPARATIVE 



ANATOMY IN THE MARINE BIOLOGICAL LABORATORY AT COLD SPRING HARBOR, LONG ISLAND; 



ROOSEVELT FIELD NATURALIST, ROOSEVELT WILD LIFE FOREST EXPERIMENT STATION, 



NEW YORK STATE COLLEGE OF FORESTRY, SYRACUSE 



WITH 1S4 ILLUSTRATIONS 



PHILADELPHIA 



P. BLAKISTON'S SON & CO. 



1012 WALNUT STREET 



