AMBLYOPSLD.E. GUI. 257 



portion of our country most likely contain other species.&quot; 

 (Putnam.) 



* Eyes rudimentary, concealed under the skin ; hody colorless. 



Ventrals present, small. . . . AMBLYOPSIS, 1. 



Ventrals entirely wanting. . . TYPHLICHTHYS, 2. 

 ** Eyes well developed ; body colored ; no ventrals. 



CHOLOGASTER, 3. 



/. AMBLYOPSIS, DeKay. LAKGEK BLIND FISH. 



1. A. spelceus, DeKay. BLIND FISH OF THE MAM 

 MOTH CAVE. Head 3 in length; D. and A. equal, well 

 developed; head and body with papillary ridges; scales 

 small; colorless; D. 10; A. 9; V. 4; P. 11; length 2 to 

 5 inches. Subterranean streams of Ky. and Ind. Mam 

 moth Cave, Wyandot Cave, etc. 



2 . TYPHLICHTHYS, Girard. SMALL BLIND FISH. 



1. T. subterraneus, Grd. General character of Am- 

 blyopsis, but the head rather blunter and broader for 

 wards; D. 7 or 8; A. 7 or 8; P. 12; length 2 inches or 

 less. Subterranean streams in Ky., Tenn., Ala. 



3. CHOLOGASTER, Agassiz. DITCH FISHES. 



1. C. cornutus, Ag. Head 3 in length; eye moderate, 

 well developed; snout with two horn-like projections; 

 yellowish brown, dark above; sides with three dark lines, 

 becoming dots on the tail; middle rays of C. dark, fins 

 otherwise uncolored; D. 8 or 9; A. 8 or 9; P. 12; length 

 2 to 2^- inches. Ditches in a rice field, Waccamaw, S. C. 

 Three specimens known. 



2. C. agassizii, Putnam. Head 4 in length; eyes 

 larger; uniform light brown, otherwise as above; length 

 1 to 2 inches. Subterranean streams in Tenn. and Ky. 



17 



