CONTENTS 



Page 



Introduction ] 



Literature on the fishes of Peru 2 



Scope of the catalog 3 



Specimens examined 3 



Acknowledgments 6 



Explanations 6 



Range and distribution of species 9 



Definitions of technical terms used in the text 10 



Systematic catalog 13 



Key to the families 13 



Family Branchiostomidae: Lancelots 21 



Genus Branchiostoma Costa 21 



Family Heterodontidae : Bullhead sharks 22 



Genus Heterodontus Blainville 22 



Family Scylliorhinidae: Cat sharks 24 



Genus Halaelurus Gill 24 



Family Rhincodontidae: Whale sharks 26 



Genus Rhincodon Smith 26 



Family Sphyrnidae: Hammerhead sharks 26 



Genus Sphyrna Rafinesque 27 



Family Galeorhinidae : Gray sharks 28 



Genus Mustelus Link 29 



Genus Prionace Cantor 36 



Genus Eulamia Gill 37 



Genus Scoliodon Miiller and Henle 40 



Genus Galeocerdo Miiller and Henle 41 



Genus Galeorhinus Blainville 42 



Family Cetorhinidae : Basking sharks 44 



Genus Cetorhinus Blainville 45 



Family Isuridae (?) : Mackerel sharks 46 



Family Squatinidae: Angel sharks 46 



Genus Squalina Dum6ril 46 



Family Torpedinidae : Electric rays 48 



Genus Discopyge Tschudi 49 



Family Rhinobatidae: Guitarfishes 50 



Genus Rhinobatos Link 50 



Family Rajidae : Skates 52 



Genus Psammobatis Giinther 52 



Family Dasyatidae: Sting rays 63 



Genus Dasyatis Rafinesque 63 



Genus Urotrygon Gill 64 



Genus Pteroplatea Miiller and Henle 71 



Family Aetobatidae: Eagle rays 74 



Genus Aetobatus Blainville 74 



III 



