GENUS BUBALICnTHYS. 201 



doubt that Rafinesque bad tbe same lisb in mind as bis C. carjyio, and I 

 have accordingly adopted the hitter name. 



Specimens in United States National Museum. 



Number. 



Locality. 



Collector. 



12291 

 12292 



Ohio River, Cincinnati 

 do 



J. W. Miluer. 

 Uo. 



Genus BUBALICHTHYS Agassiz, 



Bubalichtlnjs Agassiz, Am. Jouin. Sci. Arts, 185.5, 192. 

 Sclerognathus Gunther, Cat. Fishes Brit. Mus. vii, p. 22, 1868. 

 Catostomus et Carpiodes sp. of authors. 



Type, Carpiodes urus Agassiz. 



Etymology, PovfialoQ, buffalo ; Ix^^vg, fish. 



Head moderate or rather large, deep and thick, its superior outline 

 rapidly rising, its length about 4 in that of the body : eye moderate, 

 median or rather anterior in position j suborbital bones comparatively 

 narrow; fontanelle always present and widely open. 



Mouth moderate or small, more or less inferior, the mandible short, 

 little oblique, or typically quite horizontal, the mandible less than one- third 

 the length of the head, the premaxillaries in the closed mouth below 

 the level of the lower part of the orbit ; lips rather thin, thicker tban in 

 Ichthyobus, the upper protractile, narrow, plicate, the plica3 sometimes 

 broken up into granules; lower lip comparatively full (for a Buffalo- 

 fish), faintly plicate, the plicic b:okeii up into granules, the lower lij) 

 having the general ^shaped form seen in Cmjnodes ; jaws without car- 

 tilaginous sheath ; muciferous system well developed ; oj)ercular appa- 

 ratus well developed, but less so than in IcMIiyohns, the operculum 

 strongly rugose; isthmus moderate; pharyngeal bones triangular, with 

 large teeth, which increase in size from above downwards ; teeth com- 

 pressed, their grinding edge blunt, slightly arched in the middle, and 

 provided with a little cusp along the inner margin, which is hardly 

 detached from the crown, and does not rise above the surface : gill-rakers 

 of anterior arch slender and stiff above, growing shorter downwards. 



Bodj- ovate or oblong, the dorsal outline more or less arched, the sides 

 of the body compressed, the ventral outline curved also, but to a less 

 degree: scales very large, about equal over the body, their posterior 



