CHECK-LIST OF NORTH AMERICAN FISHES. 265 



553. Couesius dissimilis (Girardj. 



Upper Missouri and Black Hills region. 



Leucosomus dissimilis Girard, Proc. Ac. Nat. Sci. rhila. 1856, 189, Milk River 

 aud Little Muddy River, Moutaua. 



554. Couesius greeni Jordan. 



Stuart Lake, headwaters of Eraser River in British Columbia, and Lake Pend 



Oreille, Idaho. 

 CoHeniiis fireeui Jordan, Proc. Lr. S.Nat. Mus. 1893, 313, Stuart Lake, British 



Columbia. 



655. Couesius adu.stus Woolman. 



Rio de lo^ Conchos, Chihuahua. Mexico. 



Coitesins adustns Woolman, Bull. U. S. Fish Com., xiv, 18134, .57, Rio de los 

 Conchos, Chihuahua. Mexico. 



Genus 133. PIATYGOBIO Gill. 



Plaii/f/obioGiU. Tmus. Amer. Phil. Soc. Phila., v, 1863, 178 {communis =gracilis). 



556. Platygobio physignathus (Cope). 



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



common lish at Pueblo, Colora<lo. 

 Ceraticltthys physignathus Cope, Wheeler Surv., Zool., v, 651, 1875 (1876), 



Arkansas River, Pueblo, Colorado. 



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



East slope of the Rocky jMountains, from ^Missouri and Yellowstone rivers 



to the Saskatchewan. 

 Cy2>rinus ( Leiiciscus) tjracilis Richardson, Fauna Bor.-Amer., Fishes, 120, pi. 78, 



1836, Saskatchewan River at Carlton-house, Canada. 



558. Platygobio pallidus Forbes. _ 



One specimen from Ohio River at Cairo. 



Platjifjohio pallidus Forbes, in .Jordan & Gilbert, Synopsis, 220, 1883, Ohio 

 River at Cairo, Illinois. 



Genus 134. EXOGLOSSUM Rafinesque. 



Exo'jhssum Rafinesque, Jour. Ac. Nat. Sci. Phila., r, 1818, 420 (lesiienrianum). 



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



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

 Cayuga Lake, aud southward to Virginia; abundant in tho basins of 

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



Cijprinus maxillingaa LeSueur, Jour. Ac. Nut, Sci. Phila., i, 1817, 85, Pipe 

 Creek, Maryland. 



Genus 135. LEPIDOMEDA Cope. 



Lepidomcda Cope, Proc. Amer. Phil. Soc. Phila. 1874, 131 (viltataK 



560. Lepidomeda vittata Cope. 



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



nagat Valley, Nevada. 

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



Chiijuito, Arizona. 



561. Lepidomeda jarrovii Cope. 



Colorado Chiquito River, Arizona; also in southern Nevada, in s])rinns in 

 the desert. 



Lepidomeda jarrovii Cope, Proc. Amer. Phil. Soc. Phila. 1874.132, Rio Colo- 

 rado Chiquito, Arizona. 



Genus 136. MEDA Girard. 



Meda (Jirard, Proc. Ac. Xat. Sci. Pliila. 18.56, 191 {fulgida). 



562. Meda fulgida Girard. 



Rio (Jila, Arizona. 



Meda fulgida Girard, Proc. .Vc Xat. Sci. Phila. 18.5t), 191, h'io Saii Pc«lro, Ari- 

 zona. 



