210 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY III. 



uruti of Agassiz, which unquestionably belongs to this species, has a 

 year's priority over niger, and is really the first tenable name applied to 

 any species of Bubalichthys. The original account given by Kafinesque of 

 his Catostomus niger and that by Professor Agassiz of his Bubalichthys 

 urns I here append. Agassiz's descriptions of B. niger and B. bonasus 

 have been previously given under the head of the genus. 



Catostomus (Ictiobus) niger Raf. Ich. Oh. p. 56. "Entirely black; lat- 

 eral line straight; 1 have not seen this fish. Mr. Audubon describes it 

 as a peculiar species found in the Mississippi and the lower part of the 

 Ohio, being entirely similar to the common Buffalo fish, but larger, 

 weighing upwards of fifty pounds, and living in separate schools.' 7 



Carpiodes urus Agassiz, Am. Journ. Sci. Arts, 1854, p. 355. " From 

 the Tennessee River. It grows very large, weighing occasionally from 

 30 to 40 pounds. The body in this species is not so high as in C. cypri- 

 nuSj nor is it so compressed above; the scales are also not so high, but 

 more angular behind, and the anterior portion of the dorsal is not so 

 elongated. The gill-cover is larger, and the distance from the hind bor- 

 der of the eye to the inferior angle of the subopercle near the base of 

 the pectorals and the distance from the same point to the superior and 

 posterior angle of the opercle, are nearly equal. In C. cyprinus the dis- 

 tances differ by nearly one third. The subopersle is not triangular, but 

 its hind border is nearly regularly arched from the upper angle to the 

 posterior angle of the interopercle. The anal has its posterior margin 

 full and not lunate; the caudal is not so deeply furcate as in C. cyprinus. 

 The veutrals do not reach the anal. All fins are of a dark color. I am 

 indebted to Dr. Newman for this species." 



I found no specimens of Bubalichthys urus in the collections of the 

 United Slates National Museum. 



52. BUBALICHTHYS MERIDIONALIS (Gilnther) Jordan. 

 Central American Buffalo. 



1868 Sclerognathus meridionalis Gt)NTHER, Trans. Zool. Soc. p. . 



Sclerognathus meridionalis GUNTHER, Cat. Fishes Brit. Mas. vii, 23, 1868. 

 HABITAT. Rio Usumacinta, Guatemala. 



I know nothing of this species except from Giinther's description. 

 From its remote locality, it is probably distinct, but the description 

 shows no especial difference from B. bubalus, unless it be that the 

 body is slenderer. The following is Dr. Giiutber's account : 



" D. 29-30. A. 10; lat. 1. 38, 1. trausv. 7J-7J. Mouth small, inferior, 



