228 ON THE DISTRIBUTION OF FEESH-WATER FISHES 



RniNiCHTHYS LUNATUS Cope. 



Proc. Academy 1864, 278. 



This species is very abundant in the tributaries of the Kanawha and Holston; it 

 follows the smallest streams to their sources, having a power of leaping falls far 

 beyond that of any other of our Cyprinida3, except perhaps the R. nasuius. The 

 only other species I have found in company with it is the Catonotus flabellatus 

 Rafinesque. 



Size larger than those seen from Michigan; total length of a Holston specimen 4 

 inches. End muzzle to base dorsal 1 in. iO lia. ; from latter to basis caudal 18'25 

 lines. A fatty lobe behind ventrals and pectorals ; anal radii i. 7. Scales 14 — 61 — 8. 

 Orbit from 5 to 5'5 times in length of head, 4'2 in length to origin caudal. 



Brownish-olive above, with many scattered brown scales ; latter accumulated on 

 the lateral line at basis caudal ; belly golden or silvery, deepest near lateral line and 

 on suborbital region. 



Rhinichthts atronasus (Mitch.) Agass. 



Found only in the Roanoke River and in John's Creek, one of the heads of the 

 James. 



PHENACOBIUS Cope. 



The lips of this genus are defended by a cartilaginous sheatli on their opposing 

 edges. 



Phekacobius teretulus Cope. 

 Proc. Acad. Nat. Sci. Philada. 1867, 06. 



The lips of this species have weak transverse plicoe. 



From the main channel and mouths of tributaries of the Kanawha. 



Phenacobius uranops Cope. 

 L. c. 1867, 96. 



The lips of this species are tuberculate behind. 



From tlie main channel of the Holston River near Saltville, Va. 



CLINOSTOMUS Girard. 



Clinostojius affinis Girard. 



The numerous specimens of this species all differ from those of the C. i'a n d u 1 o i- 

 des Girard in the following points: The orbit enters the head 3-5 times (.3 times 

 in the latter) ; the head the body 3-6 times (not 4-25 times). Caudal peduncle 

 deeper, shorter, twice longest anal ray, to basis latter ; dorsal fin short, longest ray 

 2'75 times to end muzzle. Scales 0(10) — 53 — 5. No distinct brown lateral band; 



