178 



lines round a granulated centre. A few radiating furrows cut the 

 concentric lines on the posterior margin. 



Pyloric appendages and stomach about the same as in C. cornutus. 



Color. Uniform light brown, without markings except that the base 

 of the caudal fin is rather darker than rest of fish. Fins uucolored. 



Measurements. Total length, 1-4 inches. 



Geographical distribution. Subterranean streams in Tennessee. 



Specimen examined: 



MUSECM OF COMPARATIVE ZOOLOGY. 



1 specimen. No. 777. From a well in Lebanon, Tenn. Presented by J. M. 

 Safford. Jan., 1854. 



This species principally differs from C. cornutus by having a longer 

 body and smaller head, by having the eyes proportionately larger, and 

 by its coloration. Nothing is known of its habits except the fact 

 of its subterranean life. The scales of the single specimen known 

 indicate a young flsh, and it is probably not over half grown. 



The four species given in this synopsis are all of the family 

 as yet known, but that others will be discovered and the range of the 

 present known species extended is very probable. The ditches and 

 small streams of the lowlands of our southern coast will undoubtedly 

 be found to be the home of numerous individuals, and perhaps of new 

 species and genera, while the subterranean streams of the central 

 portion of our country most likely contain other species. 







