11 



U. rubellus, Con. Black Warrior river. 

 " rubidus, Lea. Coosa river and Big Prairie creek. 

 " Kuinphianus, Lea. Coosa and Cahawba rivers. 

 " rutilans, Lea. Chattahoochee river ; Shoal creek. 

 " salebrosus, Lea. Chattahoochee or tributaries. 

 " sax'eus, Conrad. Alabama river. 

 " scitulus, Lea. Spring creek, Tuscuinbia. 

 " securis, Lea. Tennessee river ; Alabama river. 

 " Showalterii, Lea. Coosa river. 

 " simplex, Lea. Black Warrior river. 

 " simulans, Lea. Cahawba river. 

 " Sloatianus, Lea. Chattahoochee river. 

 " Sowerbyanus, Lea. Tennessee river. 

 " sparsus, Lea. 

 " sparus, Lea. Shoal Creek. 



" sphsericus, Lea. Alabama river ; Cahawba river. 

 " stabilis, Lea. .Coosa river. 

 " stapes, Lea. Tennessee river. 

 " Stewardsbnii, Lea. '" 

 " stramineus, Conrad. Uchee and other creeks ; Beech 



creek. 



" striatus, Lea. Chattahoocbee river. 

 " strigosus, Lea. Chattahoochee or tributaries. 

 " subangulatus, Lea. Chattahoochee river ; Buck creek; 



Shoal creek. 

 " subellipsis, Lea. Chattahoochee river ; Buck creek ; 



Shoal creek. 



" subgibbosus, Lea. Coosa river ; Alabama river. 

 " subglobatus, Lea. Tennessee river. 

 " sublatus, Lea. Uchee bar ; Buck Creek ; Cahawba 



river ; Shoal creek. 

 " sudus, Lea. Chattahoochee river. 

 " Taitianus, Lea. " Alabama river." 

 "Menuissimus, Lea. Tennessee river. 

 " tetralasmus, Say. Creeks. 

 " Thorntonii, Lea. Tennessee river. 

 " tortivus, Lea. Chattahoochee river. 

 " trapezoides, Lea. Alabama river. 



