FISHES OF THE TENNESSEE BASIN. 67 



Color dark olive above, with a bluish lustre, many scales darker, as 

 is usual in this genus. Sides somewhat silvery. No dark lateral band. 

 A broad shade of deep rose color along the sides, below which most ot 

 the belly is bright crimson, the red colors brightest anteriorly. 



Length of largest specimens about 4 inches. Numerous specimens 

 from the Elk Eiver at Estill Springs, and from Stone River atMur- 

 freesboro'. This striking species resembles most G. elongata and G.pro- 

 riger. Both those species have much smaller scales (70 to 75 in the 

 lateral line iu elongata, GO to Go in proriger). The coloration is likewise 

 different, the two latter species having a dusky band along the sides, 

 the anterior half of which in elongata is red iu spring. G. elongata is 

 much more elongate, as is also G. proriger. The mouth appears largest 

 in G. estor. The distinction between G. proriger and G. elongata is per- 

 haps questionable. 



Genus NOTEMIGONUS Rafinesque. 



56. NOTEMIGONUS CHRYSLOLEUOUS (Mit.) JoV. 



Common in still waters in the Tennessee Basin. 



Genus PHENACOBIUS Cope. 



57. PHENACOBIUS URANOPS Copc. 



Bather common in the Elk and Chickamauga Bivcrs. A few speci- 

 mens from the French Broad. Originally described from the Holston 

 iu Virginia. 



Genus RIIINICHTHYS Agassiz. 



bS, Bhinichthys obtusus Agassiz. 



(Rhinichihys hinatus Cope.) 

 This species is abundant iu all clear rocky brooks and iu outlets of 

 springs. 



Genus CERATICHTHYS Baird. 



59. CERATICHTHYS MONACHUS Cope. 



Abuudant iu Chickanuiuga Biver. Originally described from the 

 Dolstou. 



GO. CEKATicnTHYS DissiMiLis {Kirt.) Cope. 



Obtained in Elk Biver. 



