246 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



Genus 109. PIMEPHALES Eafinesque. Fat-heads. 

 Pimephales Rafinesque, Ichth. Ohiensis, 52, 1820 (promelas). 



362. Pimephale.s promelas Rafinesque. Fat-head; Black-head Minnow. 



Lake Cliamplain to Kentucky, the Dakotas, aud Rio Grande. 

 Pimepltales promelas liaiiaesiiue, Ichth. ObiensiH, 53, 1820, pond near Lexing 

 ton, Kentucky. 



362a. Pimephalcs promelas maculosus (Girard). 

 Arkansas River; locally abundant. 



rimephalcH maculosus (iiraid, Proc. Ac. Nat. Sci. Phila. 1856, 180, sluices of 

 Arkansas River, Fort Makee, Arkansas. 



362b. Pimephales promelas confertus (Girard). 



Upper Rio Grande Basin; Chihuahua River, Mexico. 



Hi/borhj/uchus confertus Girard, Proc. Ac. Nat. Sci. Phila. 1856, 179, Hurrah 

 Creek, a tributary of Pecos River, Texas. 



363. Pimephales notatus (Rafinesque). Blunt-nosed Minnon-. 



Generally \ery abundant in small streams west of the Alleghanies and in 



the St. Lawrence Kiver basin. 

 MinnUus notatus Rafinesque, Ichth. Ohiensis, 47, 1820, Ohio River. 



Genus 110. MYLOPHARODON Ayres. 

 Mylopharodon Ayres, Proc. Cal. Ac. Sci. 1855, 33 {rohustus=^conocephalus). 



364. Mylopharodon conocephalus (Baird & Girard). 



Sacramento and San Joaquin rivers, California. 



Gila conocephala Baird & Girard, Proc. Ac. Nat. Sci. Phila. 18.54, 134, San 

 Joaquin River, California. 



Genus 111. MYLOCHEILUS Agassiz. 



Mylocheilus Agassiz, Am. .Tour. Sci. Arts 1855, 229 (lateralis = caurinus) . 



365. Mylocheilus caurinus (Richardson). Columbia Chub. 



Streams of Oregon and "Washington from Frazer River to the Columbia. 

 Cyprinus (Leuciscus) caurinus Richardson, Fauna Boreali-Amer., iii, 304, 1836, 

 Columbia River at Fort Vancouver. 



Genus 112. STYPODON Garman. 



Stypodon Garman, Bull. Mus. Comp. Zool., viii, 90, 1881 (signifer). 



366. Stypodon .signifer Garman. 



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



Stypodon signifer Garman, Bull. Mus. Comp. Zool., viii, 90, 1881, Lago de Par- 

 ras, Coahuila, Mexico. 



Genus 113. SEMOTILTJS Rafinesque. Fall-fishes. 



Semotilus Rafinesque, Ichth. Ohiensis, 49, 1820 (dorsalis = atro7naculatus). 



Subgenus LEUOOSOMIS Heckel. 



LeucnsouDis Heckel, Russegger's Reisen, i, 1042, 1843 (" chrysoleucus " = corpo- 

 ralis). 



367. Semotilus corporalis (Mitchill). Fall-fish; Silrer Chui; Wind-fish; Corporal, 



Abundant from St. Lawrence River to the James, east of the Alleghanies. 

 Cyprinus corporalis Mitchill, Amer. Month. Mag., I, July, 1817, 289, Wallkill 

 Ri.ver, New York. 



Subgenus SEMOTILUS Uaflnesque. 



368. Semotilus atromaculatus (Mitchill). Horned Dace; Creek Chub. 



jMaiue and western Massachusetts, westward to Kansas and Wyoming. 

 Cyprinus alromuculntus Mitchill, Amer. Mouth. Mag., Ii, 1818, 324, Wallkill 

 River, New York. 



