CONTEXTS 



Pa«e 



Historical introduction 1 



Collecting work of Nelson and Goldman 1 



Other sources of National Museum material 3 



Material in other museums 9 



Acknowledgments 15 



Abbreviations 15 



Class Amphibia Linnaeus: Order Salientia Laurenti 16 



Key to families of Mexican Salientia 17 



Family Pelobatidae Lataste 18 



Genus Scaphiopus Holbrook 18 



Key to Mexican species of Scaphiopus 19 



Family Rhinophrynidae Gunther 24 



Genus Rhinophrynus Dumeril and Bibron 24 



Family Bufonidae Hogg 27 



Genus Bnfo Laurenti 27 



Key to Mexican species of Bufo 31 



Family LeptodactyUdae Berg 74 



Key to genera of Mexican Leptodactylidae 76 



Genus Engystomops Espada 77 



Genus Leptodaclylus Fitzinger 81 



Key to Mexican species of LeptodactyJus 82 



Genus Eleutherodaciyhis Dumeril and Bibron 90 



Key to Mexican species of Eleuiherodadylus 92 



Genus Cauphias Brocchi US 



Genus Tomodactylus Giinther 120 



Genus Syrrhophus Coj>e 123 



Key to Mexican species of Syrrhophus 124 



Family Hylidae Gunther 129 



Key to genera of Mexican Hylidae 131 



Genus Gastrotheca Fitzinger 133 



Genus Pternohyla Boulenger 135 



Genus Diaglena Cop>e 137 



Genus Triprion Cof>e ' 138 



Genus Phyllomedusa Wagler 139 



Key to Mexican species of PhyUomedusa 142 



Genus Hyla Laurenti 147 



Key to Mexican species of Hyla 150 



Genus Hyldla Reinhardt and Lutken 179 



Key to Mexican species of HyleUa 180 



Family Bre%icipitidae Cope 182 



Key to Mexican Brevicipitidae 182 



Genus Hypopachus Keferstein 183 



Genus Gastrophryne Fitzinger 1S6 



Family Ranidae Bonaparte 189 



Genus Rana Linnaeus 189 



Key to Mexican species of Rana 190 



Index -17 



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