36 PALUDINA MAGNIFICA. 



"A beautiful species when perfect, occurring in vast 

 abundance on the masses of calcareous rock which have 

 fallen from the strata above into the Alabama river, at 

 Claiborne. I found it living only in such situations, and 

 exclusively within a range of six or eight miles. In the 

 Tombeckbe or Black Warrior rivers I never observed a 

 specimen of it, although I searched particularly for it on the 

 rocks at St. Stephens." Conrad. 



The soft parts of this form (which I have 

 named Tulotoma) are a desideratum. The 

 animal may be found to have dark colors in 

 lines, and a small foot. 



The following Alabama species are charac- 

 terized in Yol. 2 of the Proceedings of the 

 American Philosophical Society : 



P. TROOSTIANA, Lea, p. 34, 1841. 

 P. COOSAENSIS, Lea, p. 83, 1841. 

 P. CYCLOSTOMAFORMIS, Lea, p. 83, 1841. 

 P. INCRASSATA, Lea, p. 243, 1842. 

 P. COARCTATA, Lea, p. 243, 1842. 



