FISHES OF THE CUMBERLAND BASIN. 71 



LEPIDOSTEIDiE. 



Genus LEPIDOSTEUS Lacepkle. 

 80. Lepidosteus osseus (Z/.) Ag. 

 Generally abuudant. 



81. Lepidosteus platystomus Eaf. 

 From Huutsville, Ala. {Agassiz). 



ACIPENSERID^. 

 Genus ACIPENSER AgassU 



83. ACIPENSER MACULOSUS Lo Siiciir. 

 Huntsville.^ Ala. (Agassiz). 



83. ACIPENSER RUBICUNDUS Le Sueur. 

 From Iluntsville, Ala. (Agassiz). 



POLYODONTIDiE. 

 Genus POLYODON Lacejpede, 



84. POLYODON FOLIU3I "■ LaG?'' 



Abundant in the river-channels. 



VII. — WATER-BASIN OF CUMBERLAND RIVER. 



Sixty-five species are known to occur in the wntersof the Cumberland 

 River. Of these, forty-seven have been obtained in the lower course of 

 the river, L e., in the vicinity of Nashville, by Professor Winchell, and 

 in Stone Kiver, at Murfreesboro', by the present writers. In the upper 

 courseof the stream, thirty- three species have been obtained by Professor 

 Cope in the South Fork of the Cumberland in Tennessee and by Professor 

 Jordan at the Falls and in the Rock Castle, Round Stone, Big Laurel, and 

 other tributaries in Kentucky. Only fifteen species are, therefore, Jinoicn 

 to be common to both the upper and lower courses of the stream. The 

 actual differences between the upper and lower faunae are, however, 

 probably very small, if similar streams are comi)ared. The differences 

 really existing are i)robably chiefly due to the fact that the large fishes 

 inhabiting the h>wer part of the river are unable to ascend above the 

 falls of the Cumberland. 



Comparing the Cumoerland River with the Tennessee, the disappear- 



