146 Bryant Walker 



SoMATOGVRUS suBSTRiATUs Walker. 



Somatogyrus siibstriatits Walker, Naut., XIX, 1906, p. 97, pi. V, fig. 5. 

 Type locality: Tennessee River, Florence, Ala. 



Somatogyrus tennesseensis Walker. 



Sonwtogyrns tenncssccnsis Walker, Naut., XIX, 1906, p. 114, pi. \', lig. 8. 

 Type locality: Shoal Creek, Florence, Ala. 



Somatogyrus trotf^is Doherty. 



Somatogyrus trothis Doherty, Quar. J. of Con., I, 1878, p. 341, pi. I\', tig. i. 

 Type locality : Ohio River, Campbell Co., Ky. 



SoMATOGYRiTS UMUiLicATus Walker. 



Soiiiatogynis iiinbilicatits Walker, Naut., XVII, 1904, p. 137. pi. \', lig. 5. 

 Type locality : Coosa River, Wetumpka, Ala. 



Somatogyrus virginicus Walker. 



Somatogyrus znrginicus Walker, Naut., XVII, 1904, p. 141, pi. ^^ tigs. 18-19. 

 Type locality : Barnard's Ford, Rapidan River, Va. 



Somatogyrus walkerianus .Vldrich. 



Somatogyrus 7i'alkcnanus Aldrich, Naut., XMII, 1905, p. 140, text-fig. 

 Type locality: Conecut (Conecuh?) River, Escambia Co., Ala. 



Somatogyrus v^^ieeleri Walker. 



Somatogyrus whceleri Walker, Naut., XXIX, 191 5. p. 51, tigs. 1-2. 

 Type locality : Ouachita River, Arkadelphia, Ark. 



Genus GILLIA Stimpson, 1865. 

 GlTJ.I.\ WETIlERBYI (Dall). 



Hydrobia /' -wcthcrbyi Dall. Pr. U. S. Nat. ^lus., 1885, p. 258, pi. XVII. 



fig. 10. 

 ? Amnicola niittalliana Frauenfeld, Verb, der k. k. Zool.-bot. Ges. Wien., 



1863, p. 1029. 

 Type locality : Lake Eustis, Fla. 



Genus CLAPPIA Walker. 1909. 



Clappia Walker, Naut.. XXII, 1909. p. 89. 

 Type : Clappia clap pi Walker. 



Clappia clappi Walker. 



Clappia clappi Walker, Naut., XXII, 1909. p. 89. pi. \'T. figs. i. 4 and 7. 

 Type locality : Coosa River, Duncan's Riffle, Chilton Co.. Ala. 



