







PEEFATOET NOTE. 



S IN the first and second volumes, we present, additional to the English 



author's " Compendium of Generic Distinctions," a table of Classification 



and Nomenclature. The Reptilia and Batrachia form the subjects of this 



volume. 



The published Reports of the United States Commission of Fish and Fisheries, 



and the various Bulletins and Papers of the National Museum and Smithsonian 



Institution, have been of equal importance in affording the most recent facts and views 



touching American Zoology. 



For the use of the contents of these works, and the privilege of publishing 



tables in full, we acknowledge the courtesy of the Secretary of the Smithsonian 



Institution. 



The Fishes and Invertebrates are catalogued and described very fully in the 



above-mentioned publications, all of which are accessible to students or those desiring 



further technical knowledge, but their contents are too voluminous to be fairly 



utilized in this volume. 



J. B. H. 





Vol. Hi. 



