246 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



Genus 109. PIMEPHALES Rafinesque. Fat-heads. 



PimcphaJcs Iviifinesquo, Ichth. Ohieiisis, 52, 1820 (jiromelas). 



362. Pimephales promelas Rafinesquo. Fat-head; Black-head Minnotv. 



Lake Chaiiiplaiii to Kentucky, the Dakotas, and Rio (irando. 

 I'imephah'S promelas Kalincsque, Ichth. Obieusi.s, n!}, 1820, poud uear Lexing 

 ton, Kentucky. 



362a. Pimephales promelas maculosus (Girard). 

 Arkansas K'ivor; locally abundant. 



I'imephalcs macnloaus (iirard, Proc. Ac. Nat. Sci. Phila. 1856, 180, sluices of 

 Arkansas River, Fort Makee, Arkansas. 



362b. Pimephales promelas confertus (Girard). 



Upper Rio Grande liasin; Chihuahua River, Mexico. 



Hyborhipi chits confertus Girard, Proc. Ac. Nat. Sci. Phila. 1856, 179, Hurrah 

 Creek, a tributary of Pecos River, Texas. 



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



Generally very abundant in small streams west of the Alleghanies and in 



the St. Lawrence Iviver basin. 

 Minnllus notatus Rafinesque, Ichth. Ohieusis, 47, 1820, Ohio River. 



Genus 110. MYLOPHAEODON Ayres. 

 Mylopharodon Ayres, Proc. Cal. Ac. Sci. 1855, 33 (robustus^cotwcejihalus). 



364. Mylopharodon conocephalus (Baird & Girard). 



Sacramento and San Joaquin rivers, California. 



Gila conoecpliala Baird & Girard, Proc. Ac. Nat. Sci. Phila. 1854, 134, San 

 Joaquin River, California. 



Genus 111. MYLOCHEILUS Agassiz. 



Mylocheilus Agassiz, Am. Jour. Sci. Arts 1855, 229 (lateralis ^ caurinns) . 



365. Mylocheilus caurinus (Richardson). ColumUa Chub. 



Stre;ims of Oregon and Washington from P^razer River to the Columbia. 

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

 Columbia River at Fort Vancouver. 



Genus 112. STYPODON Garman. 



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



366. Stypodon signifer Garman. 



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



Sty2)odon signifer G.arman, 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 = atromaculatus). 



Subgenus LEUCOSOMUS Heckel. 



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

 ralis). 



367. Semotilus corporalis (Mitchill). Fall-fish; Silver Chub; 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 

 River, New York. 



SubgcniiH SEMOTILUS lUflncsque. 



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



Maine and western Massachusetts, westward to Kansas and Wyoming. 

 Cyprinus atroniaciilatiis Mitchill, Amer. Month. Mag., II, 1818, 324, Wallkill 

 River, New York. 



