THE NAUTILUS. 39 



P. anthoni/t Lea. Wetumpka. 



P. canalittum Lea. Wiisonville. 



P. dignum Lea. Spring Creek, Farmer. 



P. excuratum Con. Decatur. Except for the striae there is no 

 difference between this and monilifenim. 



P. formanii Lea. Wetumpka, common. Along the shore in 

 muddy bays. 



P. incrassatum Anth. Wiisonville and Wetumpka. 



P. incrassatum Anth., xar. showalleriiLieii. Wetumpka. 



P. moniliferum Lea. Decatur, often found in submerged logs. 



P. nohile Lea. Decatur, found on muddy and sandy bottom. 



P. ponderosum Anth. Decatur, common. 



P. striatum. Lea. Blount Springs. 



P. thorntonii Lea. Spring Creek at Farmer. 



P. vestitum Con. Montevallo and Blount Springs, common. 



Lithasia hrevis Lea. AVetumpka and Fort William Shoals. 



Goniobasis ampla Anth. Wiisonville ; Fort William Shoals and 

 Wetumpka, common, often found devouring the animal from smaller 

 shells. 



G. capillaris Lea. Wiisonville ; Fort William Shoals and We- 

 tumpka. 



G. carinifera Lam. Randolph Creek. Also Spring, Montevallo. 

 This form was received from Prof, Call years ago, labelled G. ma- 

 cella Anth. 



G. claicsa Lea. Fort William Shoals and Wiisonville, common. 

 G. crebristriatus Lea. Wetumpka, specimens referred to this spe- 

 cies are readily separated from impressa and capillaris, the young 

 have not the carina of the former, and the mature specimens are not 

 eroded like the latter, the outline and color differ from both. 



G. crenatella Lea. Wetumpka; Fort William Shoals and Wiison- 

 ville. 



G. cylindracea Con. Wetumpka and Fort William Shoals, com- 

 mon. 



G. expansa Lea. Tallapoosa River, Tallassee; Mulberry River, 

 Blount Springs, common. 



G. fallax Lea. Wetumpka ; Fort William Shoals and Wiison- 

 ville, common. 



G. hydeii Con. Black Warrior, Warrior, common. 

 G. impressa Lea. Wiisonville : Fort William Shoals and We. 

 tumpka. 



