x Field Columbian Museum — Zoology, Vol. V. 



Page 



Fish Culture in Mexico liii 



Common Names of Mexican Fresh- Water Fishes lv 



Definitions and Explanations of Terms used in the Descriptions of 



Fishes in this Work lv 



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



Inhabiting the Fresh Waters of Mexico lx 



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



CLASS I. MARSIPOBRANCHII i 



Order I. Hvperoartii ' i 



Family I. Petromyzontida* i 



Genus I. Lampetra Gray i 



i. spadicea Bean 2 



CLASS II. PISCES 3 



Order II. Rhomboganoidea 4 



Family II. Lepidosteida; 4 



Genus 2. Lepidosteus Lacepede 5 



Subgenus Lepidosteus Lacepede 5 



2. osseus (Linnaeus) 5 



[Subgemis Cylindrosteus Rafinesque] 6 



[platystomus Rafinesque] 6 



Subgenus Atractosteus Rafinesque 6 



3. tristoechus (Bloch & Schneider) 6 



[tropicus (Gill)] 7 



Order III. Nematognathi 8 



Family III. Siluridaa 8 



Subfamily Tachysurinas 9 



Genus 3. Galeichtbys Cuvier & Valenciennes 9 



4. aguadulce Meek ! 9 



Subfamily Ichthyaelurinaa 10 



Genus 4. Ichthya?lurus Rafinesque 10 



5. furcatus (Le Sueur) 10 



6. punctatus (Rafinesque) 11 



7. meridionalis (Giinther) 11 



Genus 5 . Amiurus Rafinesque 12 



Subgenus Haustor Jordan & Evermann 13 



8. australis Meek 13 



9. lupus (Girard) 14 



10. dugesi Bean 14 



1 r . mexicanus Meek 15 



1 2 . pricei (Rutter) 15 



Subgenus Amiurus Rafinesque 16 



13. natalis (Le Sueur) 16 



Gemis 6. Istlarius Jordan & Snyder 17 



14. balsanus Jordan & Snyder 17 



Genus 7. Leptops Rafinesque 18 



15. olivaris (Rafinesque) 18 



Subfamily Pimelodinas 19 



[Genus Conorhynchus Bleeker] 19 



[nelsoni Evermann & Goldsborough] 19 



