CHECK-LIST OF NORTH AMERICAN FISHES. 265 



553. Couesius dissimilifj (Girard). 



Upper Missouri find Black Hills region. 



LeucusomuH diasmilis Girard, Troc. Ac. Nat. Sci. I'liila. 18.56, 189, Milk River 

 auil Little Muddy River, Montaua. 



554. Couesius greeni Jordan. 



Stuart Lake, headwaters of Fraser River in British Columbia, aud Lake Pend 



Oreille, Idaho. 

 Conesiiis greeni Jordan, Proc. U. S.Nat. Mus. 1893, 313, Stuart Lake. British 



Columbia. 



555. Couesius adustus Woolman. 



Rio do lo:; Conehos, Chihuahua, Mexico. 



Coueaiiis adustus Woolman, Bull. U. S. Fish Com., xiv, 1894, 57, Rio de los 

 Couchos, Chihuahua, Mexico. 



Genus 133. PLATYGOBIO Gill. 



PlatyrjobioGiU/Trmis. Amer. Phil. Soc. Phila., v, 1863, 178 {cominiinis ^gracilis). 



556. Platygobio physignathus (Cope). 



Upper waters of Arkansas River; very abundant in the channels, the most 



common tish at Pueblo, Colorado. 

 Ceratichthys physignathus Cope, Wheeler Surv., ZooL, \, 651, 1875 (1876), 



Arkansas River, Pueblo, Colorado. 



557. Platygobio gracilis (Richardson). Ilat-headed Chub. 



East slope of the Rocky Mountains, from Missouri aud Yellowstone rivers 



to the Saskatchewan. 

 Cyprinus ( Leuciscus) gracilis Richardson, Faaua Bor.-Amer., Fishes, 120, pi. 78, 



1836, Saskatchewan River at Carlton-house, Canada. 



558. Platygobio pallidus Forbes. 



One specimen from Ohio River at Cairo. 



Platyf/obio pallidus Forbes, in .'ordan &, GilV)ert, Synopsis, 220, 1883, Ohio 

 River at Cairo, Illinois. 



Genus 134. EXOGLOSSUM Eafinesque. 



Exoglossam Rafinesque, Jour. Ac. Nat. Sci. Phila., i, 1818, 420 (lesueurianum). 



559. Exoglossuni maxillingua (LeSueur). Cut-lips; Nigger Chub; Nigger Dick. 



Lake Ontario, St. Lawrence River, Lake Champlain, Hudson River, aud 

 Cayuga Lake, and southward to Virginia: abundant in the basin.s of 

 the Susquehanna, Hudson, Potomac, James, Roanoke, and Kanawha. 



Cyprinus maxillingua LeSueur, Jour. Ac, Nat. Sci. Phila., i, 1817, 85, Pipe 

 Creek, Maryland. 



Genus 135. LEPIDOMEDA Cope. 



Lepidomeda Cope, Proc. Amer. Phil. Soc. Phila. 1874, 131 {viltata^. 



560. Lepidomeda vittata Cope. 



Known only from the Colorado Chi(iuito River, Arizona, and from Pahra- 



uagat Valley, Nevada. 

 Lepidomeda vittata Cope, Proc. Amer. Phil. Soc. Phila. 1874, 131, Rio Colorado 



Chi(|uito, Arizona. 



561. Lepidomeda jarrovii Cope. 



Colorado Chiquito River, Arizona; also in southern Nevada, in siirings in 



the desert. 

 Lepidomeda jarrovii Cope, Proc. Amer. Phil. Soc. Phila. 1874,132, Rio Colo- 



ra<lo Chiquito, Arizona. 



Genus 136. MEDA Girard. 



Meda Girard, Proc. Ac. Nat. Sci. Phila. 1856, 191 (fulgida). 



562. Meda fulgida Girard. 



Rio Gila, Arizona. 



Medafahjida Girard, Proc. Ac Xat. Sci. Phila. 1856, 191, Rio San Pedro, Ari- 

 zona. 



