140 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



dd. Dorsal rays 12-1 1 in number. 



e. Scales largo, 41-50 in the course of the lateral line. 



/, Caudal fin normal, the two lobes about equal and similarly colored. 



160. in. KiaCB'olcpadoitUBai (Le Sueur) Jordan. — Common Bed Horse; Mullet; 



White Sucker ; Large-scaled Sucker. 



Head comparatively elongate, bluutisb, rather broad and flattened 

 above, 4-5 in length. Body stoutisL, varying to moderately elongate. 

 Lips rather fall, theblnntish muzzle projecting bej'ond thelai-ge mouth ; 

 greatest depth of cheeks more than half distance from snout to pre- 

 opercle. Eye rather large. Dorsal fin medium, its developed rays 12- 

 14:, usually 13 in number, its free edge nearly straight, its longest ray 

 shorter than head. Scales large, about 45 in the lateral line. Oliva- 

 ceous ; sides silvery ; lower fins in the adult red or orange. Great Lakes 

 to Virginia, southwestward to Arizona ; one of the most abundant 

 fishes, reaching a length of 2 feet or more. The Eed Horse of the Ohio 

 and Mississippi, with the head relatively longer and the mouth larger, 

 is perhaps worthy of distinction as var. duqxiesni (Le Sueur) Jor. The 

 eastern form (var. macrolcj.ndotimi) is scarcely distinguishable from the 

 next species. 



(Catostomus maerolepidotus and duquesnl Le Sueur, Journ. Acad. Nat. Sci. Phila. i, 

 94,105, 1817: Catostomus enjilirurus Rtf. Amer. Mouth. Mag. 1818, 354: Cafosiomns 

 duqucsni Giinther, vii, 18 : Mijxostoma maerolcpidota and vars. duquesni and lachrijmaUs 

 Jordan, Man. Vert. 313; Jordan, Bull. U. S. Nat. Mns. xii, 120: Piijchostomus du- 

 quesni, erythrurus, rohustus, oneida, lachrymale, etc. Cope, Proc. Amor. Phil Soc. 1870. 

 Mijxostoma euryops Jordan, Ann. Lye. Nat. Hist. N. Y. 187<5, 348, is probably a mon- 

 strosity of this species. ) 



161. ITJ. atiircoluill (Le S.) Jordan. 



Head comparatively short, low and small, conic, 5 -5.^ in length. Back 

 elevated and compressed. Depth 3^ in length. jMouth small, over- 

 passed by the snout, the lips thin and small, the greatest depth of cheek 

 half the distance from snout to iireopercle. Eye small. Coloration 

 bright yellowish brown, somewhat silvery ; lower fins bright red. Dor- 

 sal rays 13, the fin somewhat falcate, its free edge concave, its longest 

 ray longer than head. Scales 5-45-4. Great Lakes, Oliio Valley, and 

 northward. 



{Catostomus aureolus Le Sueur, Journ. Acad. Nat. Sci. Phila. i, 95, 1817 : Catostomus 

 macrolepidotus Giinther, vii, 18; Jordan, Man. Vert. 314 ; Jordan, Bull. U. S. Nat. Mus. 

 xii, 124: f Cyprinus lesueuri IHqXi, Franklin's Journ. 1823, 772.) 



162. Dfl. CD'assiJabrc (Cope) Jordan. 



Body flattish, the back elevated and compressed. Depth 3^. Muzzle 

 contracted, lower lip thick. Scales large, 5-44-5. Dorsal rays usually 

 VI. Dorsal fin elevated in front, its first soft ray longer than the base 

 of the fin. Color silvery, with smoky shading above, some of the scales 



