414 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



LEPIDOSTEID^. 



7. — Lepidosteus Lacepede. 1803. Gar Pikes. 



§ Lepidosteus.. 



18. Lepidosteus osseus (L.) Ag. Great Lake Region, south and west. 



§ Cylindrosteus Rafinesque. 1820. 



19. Lepidosteus platystomus Eaf. Great Lake Region, south and west. 



8.— LiTHOLEPis Rafinesque. 1818. Alligator Gars. 



(Airactosteus Eaf. 1820.) ■ 



20. Litholepis spatula (Lac.) Jor. Southern States. 



AMIID^. 



9. — Amia LinniTBUs. 1758. Bow-flns. 



21. Amia calva L. Great Lake Region, south and west. 



ANGUILLID^. 

 10.— Anguilla Thunberg. 179-. Eels. 



22. Anguilla vulgaris Fleming. Entire northern hemisphere, in nearly 



all waters, {d. a. s.) 



SILURID^. 



11.— NoTURUS Rafinesque. 1818. Stone Oats. 

 § Schilbeodes Bleeker. 1858. 



23. Noturus sialis Jordan. Entire Mississippi Valley, Upper Great 



Lakes, and in Red River of the North. 



24. JSfoturus gyrinus (Mit.) Raf. Southern New York and Pennsylvania. 



25. Noturus leptacantJms Jordan. Chattahoochee and Alabama Rivers. 



26. Noturus eleutherus Jordan. French Broad and Tar Rivers. 



27. JSfoturus miurus Jordan. Great Lakes and entire Mississippi Valley. 



28. Noturus exilis Nelson. Wisconsin to Kansas. 



29. Noturus insignis (Rich.) Gill & Jor. Pennsylvania to Georgia. {N 



lemniscatus Le S. ; N. marginatus Baird). 



§ Noturus. 



30. Noturus Jlavus B.-a.f. Vermont to Montana ; south to Kentucky. 



12. — Pelodichthts Rafinesque. 1819. Mud Cats. 



(Hopladelus Raf. 1820.) 



31. PelodichthysoUvaris{Ilaf.)Gi\l& Jor. Ohio to Iowa; south to Florida. 



13. — Amiurus Rafinesque. 1820. Bullheads. 



32. Amiurus hnmneus Jor. South Carolina and Georgia. 



33. Amiurus pUtycephalus (Grd.) Gill. North Carolina to Georgia. 



