CHECK LIST OF FISHES 113 



798. Mylopharodon conocephalus (Baird and Girard). Kaweah chub. 



Sacramento and San Joaquin Rivers, Calif.; southeastern Oregon, Pit 



River and Big Valley. 

 Gila conocephala Baird and Girard, Proc. Acad. Nat. Sci. Phila., VII, 



1854, 135, San Joaquin River, Calif. 

 Mylopharodon robustus Ayres, Proc. Calif. Acad. Nat. Sci., I, 1855, 33, 



San Joaquin River, Calif. 



Genus 295. STYPODON Garman. 



Stypodon Garman, Bull. Mus. Comp. Zool., VIII, 1881, 90 {S. signifer 

 Garman) . 



799. Stypodon signifer Garman. 



Lago de Parras, an isolated lagoon in Coahuila, Mexico. 

 Stypodon signifer Garman, Bull. Mus. Comp. Zool., VIII, 1881, 90, 

 Lago de Parras, Coahuila, Mexico. 



Genus 296. CHROSOMUS Rafinesque. 



Chrosomus Rafinesque, Ichth. Ohiensis, 1820, 47 {Luxilus eryihrogaster 

 Rafinesque). 



800. Chrosomus erythrogaster Rafinesque. Red-bellied dace. 



New Brunswick to Ohio, Wisconsin, Colorado, and northern Alabama; 



St. Lawrence River; chiefl\' or entirely west of the Alleghenies; very 



abundant northward. 

 Luxilus or Chrosomus erythrogaster Rafinesque, Ichth. Ohiensis, 1820, 



47, Ohio River. 

 Chrosomus pyrrhogaster Jordan, Man. Vert., Ed. I, 1876, 284, White 



River, Ind. 



801. Chrosomus eos Cope. 



Streams east of the Alleghenies, north to the Susquehanna; scarce. 

 Chrosomus eos Cope, Proc, Acad. Nat. Sci. Phila., XIII, 1861, 523, 

 Meshoppen Creek, Susquehanna River, Pa.; perhaps a variation of 



Chrosom us erythrogaster. 



802. Chrosomus oreas Cope. 



Headwaters of Roanoke River, and clear tributaries of the Tennessee 



River. 

 Chrosomus oreas Cope, Jour. Acad. Nat. Sci. Phila., VI, 1868, 233, 



head of Roanoke River, Montgomery County, Va. 



803. Chrosomus dakotensis Evermann and Cox. 



Chrosomus dakotensis Evermann and Cox, Rept. U. S. Fish Com., 

 XIX, 1.S9."), Crow Creek, Chamberlain, S. Dak. 



Genus 297. LAVINIA Girard. 



Lavinia Girard, Proc. Acad. Nat. Sci. Phila., VII, 1854, 137 (L. exili- 



cauda Baird and Girard). 

 Luxilinus Jordan, Cat. Fishes N. Amer., 1885, 33 (Laucosomus occi- 



dentalis Baird and Girard); young. 



804. Lavinia exilicauda Baird and Girard. Hitch; Chigh. 



Streams of the coast ranges about San Francisco and Monterey; 



locall}- common as far north as Clear Lake, Calif. 

 Lavinia exilicauda Baird and Girard, Proc, Acad. Nat. Sci. Phila., 



VII, 18.54, 137, Sacramento River, Calif. 

 Leucosomus occidentalis Baird and (iirard, loc cit., VII, 1854, 137, Poso 



Creek; Four Creeks, Calif.; young of L. exilicauda. 

 Lavinia harengus Girard, loc. cit., VIII, 1856, 184, Monterey, Calif. 



Genus 298. OXYGENEUM Forbes. 



Oxygeneum Forbes, Bull. 111. Lab. Nat. Hist., II, 1885, 136 (0. pul- 

 verulentum Forbes). 



806. Oxygeneum pulverulentum Forbes. 

 Illinois Kiver, 111. 



Oxygeneum pulverulentum Forbes, Bull. 111. Lab. Nat. Hist., II, 1885, 

 136, Illinois River, 111. 



Genus 299. PTYCHOCHEILUS Agassiz. Squawfish. 



rtyrhorheili/s Agassiz, .Xmer. Jour. Sci. Arts, XIX, 1855, 227 (/•*. gra- 

 cilis Ag&Bsiz = Cj/prinus (Leuciscus) oregonensis Richardson). 



