34 THE NAUTILUS. 



SOME SHELLS OF MISSISSIPPI AND ALABAMA. 



BY A. A. HIXKLEY. 



In the fall of 1904, with the aid of some of my conchological 

 friends, for the purpose of collecting in that region, a trip was made 

 to Abbeville, Grenada, Durant and Columbus, Mississippi, and 

 Tuscaloosa, Boligee, Tuscumbia and Florence, Alabama. 



The streams along the Illinois Central railroad where stops were 

 made, have sandy beds and not favorable for molluscan life, with the 

 exception of two specimens of Pleurocera elevatum, no representatives 

 of the Strepomatidce were found in these streams. 



In determination of material collected thanks are due Messrs. 

 Bryant Walker, Wm. A. Marsh, L. S. Frierson, Dr. V. Sterki, F. 

 C. Baker and H. A. Pilsbry. 



Family Helicinid^;. 

 Helicina orbiculata Say. Boligee, Ala., dead specimens only. 



Family Helicidje. 



Polygyra leporitia Gould. Abbeville and Columbus, Miss., Boligee, 

 Ala. 



Polygyra troostiana Lea. Florence, Ala. 



Polygyra fraudulenta Pilsbry. Florence, Ala. 



Polygyra injleeta Say. A common species found at all localities. 



Polygyra exoleta Binney. Florence, Ala. 



Polygyra palliata Say. Abbeville, Miss., Boligee and Tuscaloosa, 

 Ala. 



Polygyra obstricta Say. Columbus, Miss., Florence, Ala. 



Polygyra appressa Say. Florence, Ala. 



Polygyra appressa perigrapta Pilsbry. Grenada and Columbus, 

 Miss. 



Polygyra thyroides Say. Abbeville, Grenada and Columbus, 

 Miss., Tuscaloosa, Boligee and Florence, Ala. At Boligee they 

 were numerous along the railroad right of way. In the same situa- 

 tion though not as numerous were P. clausa and B. dealbatus. 



Polygyra clausa Say. Boligee, Ala., varies a little in size and 

 thickness of the shell. 



Polygyra spinosa Lea. Florence, Ala. Common on both sides 

 of the river. 



