x FIELD COLUMBIAN MUSEUM ZOOLOGY, VOL. V. 



PAGE 



Fish Culture in Mexico liii 



Common Names of Mexican Fresh-Water Fishes Iv 



Definitions and Explanations of Terms used in the Descriptions of 



Fishes in this Work Iv 



Definition of the Two Classes of Fishes or Fish-like Vertebrates 



Inhabiting the Fresh Waters of Mexico Ix 



Artificial Key to the Families of Mexican Fresh- Water Fishes Ix 



CLASS I. MARSIPOBRANCHII i 



ORDER I. HYPEROARTII i 



Family I. Petromyzontidac i 



Genus I. Lampetra Gray i 



1. spadicea Bean 2 



CLASS II. PISCES 3 



ORDER II. RHOMBOGANOIDEA 4 



Family II. Lepidosteidae 4 



Genus 2. Lepidosteus Lacepede 5 



Subgenus Lepidosteus Lac6pede 5 



2. osseus (Linnaeus) 5 



[Subgenus Cylindrosteus Rafinesquc] 6 



[platystomus Rafinesque] ' 6 



Subgenus Atractosteus Rafinesque 6 



3. tristcechus (Bloch & Schneider) 6 



[tropicus (Gill)] .' 7 



ORDER III. NEMATOGNATHI 8 



Family III. Siluridae 8 



Subfamily Tachysurinae 9 



. Genus 3. Galeichthys Cuvier & Valenciennes 9 



4. aguadulce Meek 9 



Subfamily Ichthyaelurinae 10 



Genus 4. Ichthyaelurus Rafinesque 10 



5. furcatus (Le Sueur) 10 



6. punctatus (Rafinesque) 1 1 



7. meridionalis (Gunther) . . u 



Genus 5. Amiurus Rafinesque 12 



Subgenus Haustor Jordan & Evermann 13 



8. australis Meek 13 



9. lupus (Girard) 14 



10. dugesi Bean 14 



1 1 . mexicanus Meek 15 



12. pricei (Rtitter) 15 



Subgenus Amiurus Rafinesque 16 



13. natalis (Le Sueur) 16 



Genus 6. Istlarius Jordan & Snyder 17 



14. balsanus Jordan & Snyder 17 



Genus 7. Leptops Rafinesque 18 



15. olivaris (Rafinesque) 18 



Subfamily Pimelodinaa 19 



[Genus Conorhynchus Bleeker] 19 



[nelsoni Evermann & Goldsborough] 19 



