102 U. S. BUREAU OF FISHERIES 



Order X. EVENTOGNATHI. Carps 



Family 89. CATOSTOMIDiE. Suckers and buffalofishes 



Genus 273. CYCLEPTUS Rafinesque. Blackhorse. 



Cycle plus Rafinesque, Jour. Phys., LXXXVIII, 1819, 421 (C nigrescens 



Rafinesque = Ca^o.s<om».s elongatus LeSueur). 

 Rhythidosto7nus Heckel, Fisch. Syriens, in Russegger's Reisen, 1842, 



1023 {Catostomus elongatus LeSueur). 



710. Cycleptus elongatus (LeSueur). Blackhorse; Gourdseed sucker; Missouri 



sucker; Suckerel. 

 Mississippi valley; rather common in large streams. 

 Catostomus elongatus LeSueur, Jour. Acad. Nat. Sci. Phila., I, 1817, 



103, Ohio River. 

 Cycleptus nigrescens Rafinesque, Jour. Phys., LXXXVIII, 1819, 421, 



Ohio River. 



Genus 274. MEGASTOMATOBUS Fowler. Big-mouthed buffalofish. 



Mcgastumatobus Fowler, Proc, Acad. Nat. Sci. Phila., LXV, 1913, 45 

 (Sclerugnathus cyprinella Cuvier and Valenciennes, the chef de filo of 

 these authors for Sclerognathus being Sclerognathus cyprinus) . 



Ichthyobus Agassiz, Amer. Jour. Sci. Arts, 1855, 192 (7. bubalus Agassiz; 

 not Catostomus bubalus Rafinesque; revised spelling of Ictiobus). 



711. Megastoraatobus cyprinella (Cuvier and Valenciennes). Redmouth 



buffalojish; Common buffalofish; Bigmouth buffalo; Gourdseed buffalo. 

 ]VIi.ssissipin Valley to Red River of the North; generally abundant in 



larger streams. 

 Sclerognathus cyprinella Cuvier and Valenciennes, Hist. Nat. Poiss., 



XVil, 1844, 355 (477), Lake Pontchartrain, La. 



Genus 275. ICTIOBUS Rafinesque. Buffalofishes. 



Ictiobus Rafinesciue, Ichth. Ohiensis, 1820, 55 {Amblodon bubalus 



Rafinesciue). 

 Bubalichthys Agassiz, Amer. Jour. Sci. Arts, XVIII, 1855, 192 {Car- 

 piodes urus Agassiz). 



Subgenus BUBALICHTHYS Agassiz. 



712. Ictiobus urus (Agassiz). Mongrel buffalo; Round buffalo; Black buffalo, 



Chopper. 



Missi.ssii)pi Valley; less common than the others in the large streams; 

 the largest and least common of the buH'alo fish. 



ICarpiodcs niger Rafinesque, Ichth. Ohiensis, 1820, 56, Ohio River; 

 may be M. cyprinella. 



Carpiodes vrus Agassiz, Amer. Jour. Sci. Arts, XVII, 1854, 355, Ten- 

 nessee River, Ala. 



Bubalichthys urus Agassiz, loc. cit., Ohio River. 



IBubalichthys niger Agassiz, loc. cit., 193, Ohio River. 



"^Bubalichthys bonasus Agassiz, loc. cit., 195, Osage River, Mo. 



Subgenus ICTIOBUS Rafinesque. 



713. Ictiobus bubalus (Rafinesque). Smallmouth buffalo; Razor-backed 



buffalo; Sackertnouth buffalo; Quillback buffalo; Brown' buffalo; Rooter. 

 Mississippi Valley and southward; generally abundant. 

 lAmblodon bubalus Rafinesque, Jour. Phys., LXXXVIII, 1819, 421, 



Ohio River. 

 fCarpiodes taurus Agassiz, Amer. Jour. Sci. Arts, XVII, 1854, 355, 



Mobile River. 

 tCarpiodes vitulus Agassiz, loc. cit., 356, Wabash River at New Har- 

 mony. 

 Ichthyobus rauchi Agassiz, loc. cit., XIX, 1855, 192. 

 Ichthyobus cyanellus Nelson, Bull., 111. Lab. Nat. Hist., I, 1876, 49, 



Illinois River. 

 Bubalichthys alius Nelson, in Jordan, Proc. Acad. Nat. Sci. Pliila., 



XXIX, 1877, 73, Cairo, 111. 

 Bubalichthys bubalinus Jordan, Bull. U. S. Nat. Mus., IX, 1877, 50, 



Ohio River. 



