12 2 Bryaxt Walker 



Subfamily RHODACMEIX.E Walker, 191 7. 



Genus RHODACMEA Walker, 1917. 



Subgenus RHODACMEA s. s. 

 Rhodacmea FiLOSA (Conrad). 



Ancylus filosns Conrad, Xew F. W. Shells, 1834, p. 57; Haldeman, Mon., 

 1844, p. 10, pi. I, fig. 9; Binney, L. and F. W. Shells, II, 1865. p. 147, 

 fig. 248; Walker, Xaut., XVIII, p. 75, pi. 6, figs. 7-8. 



Aci'oloxns filosus Tryon, Alon., 1870, p. 232. 



Type locality: Black Warrior River, south of Blount Springs. 



RiiODACMEA CAHAwuENSTS Walker. 



Ancyhis filosus "^Valker, Naut., XVIII, 1904, p. 76, pi. VI, figs. 1-6. 

 Rhodacmea caJiawbensis iWalker, X^aut., XXXI, 1917, p. 7, pi. I, figs. 4-6. 

 Type locality : Cahawba River, Gurnee, Shelby Co., Ala. 



Rhodacmea eeatior (Anthony). 



Ancylus clatior Anthony, Ann. N. Y. Lye. X"at. Hist., VI, 1855, p. 158, v\. 

 V, fig. 20; Binney, L. and F. W. Shells, II. 1865, p. 140. fig. 234; 

 Walker, Xaut., XVIII, 1904, p. 78, pi. Y, figs. 10-12. 



Type locality : Green River, Ky. 



Rhodacmea hinkleyi Walker. 



Ancylus rhodaccus "Walker," Hinkley, Xaut., XX, 1906, p. 40, not de- 

 scribed. 

 Ancylus hinklcyi Walker, X^'aut., XXI, 1908, p. 139, pi. IX, figs. 11-T3. 

 Type locality: Ohio River, Golconda. Ills. 



Section RHODOCEPHALA Walker, 191 7. 



Rhodacmea riiodacme Walker. 



Rhodacmea rhodacme Walker, Xaut., XXXI, 1917, p. 8, pi. I, figs, i, 2 and 8. 



Type locality: Coosa River, Williamsville, Shelby Co., Ala.^ 



Rhodacmea gwatkiniana Walker. 



Rhodacmea gzvatkiniana Walker, Xaut., XXXI, 1917, p. 9, pi. I, figs. 3, 7 



and 9. 

 Type locality: Coosa River, Butting Ram Shoals, Coosa Co., Ala. 



