A MANUAL OF 

 LAND AND FRESH WATER 





2^. 



VERTEBRATE ANIMALS 



OF THE 



UNITED STATES 



(Exclusive of Birds) 



BY 



HENRY SHERRING PRATT, Ph.D. 



PROFESSOR OF BIOLOGY IN HAVERFORD COLLEGE. PA. 



AUTHOR OF "a MANUAL OF THE COMMON 



INVERTEBRATE ANIMALS," ETC. 



SECOND EDITION 



With 184 Illustrations 

 AND A Glossary 



PHILADELPHIA 

 P. BLAKISTON'S SON & CO., Inc. 



1012 WALNUT STREET 



