Ill BULT^KTIN 38 141 



10, p. 100, pi. 23, f. 5, 8, '99-1900; Jolmson, Occ. Pa. Best. 

 Soc. N. H., 7, p. 119, 1915. 



Helix depresses Montagu. 



Distribution. — Greenland (t3^pe locality) to Charlotte Har- , 

 bor, West Florida. This species is the genot5^pe. 



Genus Ai^PULLARlA Lamarck 

 depressa Say, Dall, Bull. 37, U. S. N. M., p. 150, '89. 



Distribution. — Georgia to West Florida, Texas and Mexico. 



caliginosa Reeve, Conch. Icon., yion. Ampidlaria^i. 118, pi. 25, 

 1856; Dall, Proc. U. vS. N. M., 8, p. 255, 1885; Bull. 37, 

 U. S. N. M., p. 150, 1889. 



Distribution. — Cedar Keys, West Florida to Texas, Mexico 

 and Nicaragua. In freshwater swamps. 



pinei Dall, The Nautilus, p. 75, Nov. 1898. 



Distribution. — Homosassa River, Fla. 



Genus PALUDESTRINA d'Orbigny 

 aldrichi Dall, Proc. U. S. N. M., 46, p. 234, pi. 22, f. 7, 1914. 



Distribution. — Upper Miocene or Pliocene. Well near Al- 

 exandria, lya., at 49 feet. Brackish water formation, 

 plana Aldrich, Nautilus, 24, pt. 12, p. 139, pi. 8, f. 3, 1911; 

 Dall, Pr. U. S. N. M., 46, p. 234, 1914. 



Distribution. — Upper Miocene or Pliocene. Well near Al- 

 exandria, La., at 49 feet. Also Satilla River, Ga., (type 

 locality). 



curva Dall, Proc. U. S, N. M., 46, p. 235, pi. 22, f. 4, 1914. 



Distribution. — Upper Miocene or Pliocene. Well near Al- 

 exandria, Ga., at 49 feet, 

 cingulata Dall, Proc. U. S. N. M., 46, p. 235, pi. 22, f. i, 1914. 



Distribution. — Upper Miocene or Pliocene. Well near Al- 

 exandria, La., at 49 feet. 



