46 FISHES oo eet oe 

This dace reaches a length of five inches, and it is one of the most 
remarkable of the members of the minnow family, because of the 
depressions in the bones of the lower part of the head. The color is 
olivaceous, with silvery sides. There is a lateral chain of brown dots 
and a narrow vertebral line. 
This species has no importance except as food for black bass and 
other valuable species. 
Genus PHENACOBIUS Cort. 
62. Phenacobius teretulus Cope. 
The Sucker Minnow. 
This species was first described by Professor Cope in the Proceedings of the Aca- 
demy of Natural Sciences, Philadelphia, 1867, page 96, as follows : 
‘‘Head stout, four and two-thirds in total length, exclusive of caudal fin, equal 
depth at dorsal fin ; orbit three-fifths in length of former, its superior rim on frontal 
plane. Preorbital bone elongate parallelogrammic. Muzzle elongate, decurved ob- 
tuse, heavy. Canthus of mouth opposite middle of 0. preorbitale ; supra opercular 
region rounded; isthmus wide; form moderate, caudal peduncle not attenuated. 
Seales with coarse concentric lines and radii; 6-48-5; thoracic region scaled. Pec- 
toral fin not reaching ventrals, nor ventrals the anal. Dorsal narrow, elevated ; cau- 
dal deeply forked; radii D. 1, 8; C.+18+; A. 7; V. 1,8; P. 17. Total length of speci- 
men, 3in. 6.51. Above pale olive yellow, the scales faintly edged with black ; 
below silvery ; end of muzzle and band on each side to orbit blackish ; a leaden band 
on each side on middle line from behind ventrals to base of caudal, which is oc- 
casionally broken into spots. 
“The affinities of this fish appear to be to Ceratichthys ; its habits and food are pro- 
bably similar ; as in that genus the natatory bladder is well developed. Its habitat 
appears to be in the rapid parts of the river; I have not seen it in the tributary 
creeks, though I have examined them carefully. Several specimens procured.” 
The sucker minnow has been found in tributaries of the Kanawha 
river, in West Virginia, and doubtless inhabits other tributaries of the 
Ohio in western Pennsylvania. 
The lips of this minnow have transverse ridges resembling those 
found in some of the suckers. The species has a dusky lateral band. 
The general color is yellowish, darker above. 
This species reaches a length of three and one-half inches. 
Genus RHINICHTHYS Aaassiz. 
63. Rhinichthys cataractz C. & V. 
The Long-nosed Dace. 
The long-nosed dace has.a moderately elongate body, with short and stout caudal 
peduncle and a moderate- sized head. The greatest depth is contained four and two- 
thirds times in the total length without caudal ; the least depth of the caudal peduncle 
eightand one-half times. The width of the body equals the combined length of snout 
andeye. The length of the head is one-fourth of the total without caudal and three 
times the length of the snout. The eye is placed high, one-fifth to one-fourth as long as 
the head and about two-thirds as long as the interorbital width. The mouth is hori- 
zontal, small, placed under the snout, the lower jaw the shorter, the upper lip thick 
