re 
n 
49V)  "wprooodno[q A Jo uonvpuo49gip umurxeur jo voae ayy sr yoya *&opea uenpejeddy jo dey — + "514 
No. 418.] BASELEVELING. 845 
southwestwardly into the interior of northern Georgia ; thence, 
the Chattahoochee River and tributaries, to within a hundred 
miles of the Gulf. South, the species are restrained from 
: 7 [PP PH i. 
; T c 777 2 
i: ; viaa 
772 2o: 
Spreading by the influence of the Gulf of Mexico. West, the 
id labama, Cahawba, and Black Warrior Rivers and their tribu- 
ries, those of the latter reaching almost to Florence, on the 
