CHECK-LIST OF NORTH AMERICAN FISHES. 247 



368a. Semotilus atromaculatus thoreauianus (Jordan). 

 Streams of Georgia and Alabama. 



Semotilus iJwreauianus Jordan, Bull. U. S. Nat. Mus., x, 63, 1877, Flint River, 

 Georgia. 



Genus 114. POGONICHTHYS Girard. 



Po//OH((// f7(//s Girard, Proc. Ac. Nat. Sci. Phila. 1854, 136 (in(rquilohus = viacro- 

 lejndotus). 



369. Pogonichthys macrolepidotus (Ayres). Split-tail. 



Lowland streams of California. 



Leuciscits macrolepidotus Ayres, Placer Times and Transcript, May 30, 1854, 

 San Francisco. 



Genus 115. PTYCHOCHEILUS Agassiz. 



Ftychovheilits Agassiz, Am. Jour. Sci. Arts 1855, 229 {gracilis = oregonensis). 



370. Ptychocheilus oregoiiensis (Richardson). Squawfisli; Chappaul; TellowbeJhj; 



Sacramento Pike. 

 Rivers of Oregon and Washington, in the Columbia basin to Montana and 



Idaho, and northward to liritish Columbia; also in the Sacramento, 



San Joaquin, Salinas, and Pajaro rivers of California. 

 Cyprinns (Leitcisciis) oregoncnsis Richardson, Fauna Bor.-Amer., iii, 305, 1836, 



Columbia River. 



371. Ptychocheilus harfordi Jordan & Gilbert. 



Lower Sacramento River, California. 



Ftyeliochilus harfordi Jordan & Gilbert, Proc, U. S. Nat. Mus. 1881, 72, Sacra- 

 mento River, California. 



372. Ptychocheilus lucius Girard. " White Salmon" of the Colorado. 



Colorado Basin ; abundant. 



Ftychocheilus lucius Girard, Proc. Ac. Nat. Sci. Phila. 1856, 209, Rio Colorado. 



Genus 116. GILA Baird & Girard. 



Gila Baird & Girard, Proc. Ac. Nat. Sci. Phila. 1853, 368 (rohusta). 



373. Gila elegans Baird & Girard. Bony-tail; " Gila Trout.'' 



Colorado and Gila rivers. 



Gila elegans Baird & Girard, Proc. Ac. Nat. Sci. Phila. 1853, 369, Zuiii, Colo- 

 . rado, and Gila rivers. 



374. Gila robusta Baird & Girard. Round-tail. 



Tributaries of the Rio Colorado and Rio Gila. 



Gila rohusta Baird & Girard, Proc. Ac. Nat. Sci. Phila. 1853, 368, Zuili River, 

 New Mexico. 



375. Gila seminuda Cope «fc Yarrow. 



Rio Virgen, in Utah and Nevada. 



Gida seminuda Cope & Yarrow, Zool. Wheeler's Expl. W. 100th Mer., v, 666, 

 1875 (1876), Rio Virgen, Nevada. 



Genus 117. LEUCISCUS Cuvier. 



Leuciscus (Klein) Cuvier, Regne Anim^-l, ed. i, 194, 1817 (dohula, rutilus, leucis- 

 cus, alburinis, and i)hojcinus). 



Subgenus SIBOMA (Sirard. 



Siboma Girard, Proc. Ac. Nat. Sci. Phila. 1856, 208 (crassicauda). 



376. Leuciscus crassicauda (Baird & Girard). Sacramento Chub. 



Rivers of California ; generally abundant in the Sacramento and San Joaqnin. 

 Lavinia crassicauda Baird & Girard, Proc. Ac. Nat. Sci. Phila. 1854, 137, San 

 Joaquin River, California. 



