i64 Bryant Walker 



Anculosa suncLonosA Say. 



Does not include A. tint'mnahuhim Lea and virgata Lea as stated by 

 Tryon (134, p. 404). See Walker (150, p. no). 



Anculosa tintinnabulum Lea. 



Is a valid species and does not include virgata Lea. See Walker (1. c). 



Anculosa tryoni Lewis. 



Ancidosa tryoni Lewis, Am. J. of Con., VI, 1870, p. 221, pi. 12, fig. 8. 

 Type locality : Holston River, Tenn. 



Tryon (133, p. 87) considers this to be the tccniata Con., but the approx- 

 imation is at the best very doubtful. 



Anculosa ump.ilicata Wetherby. 



Ancidosa umbilicata Wetherby , Jour. Cin. Soc. Nat. Hist., 1876, p. ir, pi. I, 



fig. 4. 

 Type locality: Stone River, Rutherford Co., Tenn. 



Anculosa virgata Lea. 



Is not the young of tinfijinabiiliiiu as stated by Tryon (134, p. 404). but 

 is a valid species. See Walker (150, p. no). 



Genus MESECHIZA Lea. 



Has no standing. The type species is the young of A>igilrcina verru- 

 cosa. See Hinkley (57, p. 56). 



Family NERITID^. 



Genus NERITINA Lamarck, 1809. 

 Neritina reclivata Say. 



V. Martens (73, p. 472) considers that this is only a variety of .V. liiico- 

 lata Lam. 

 NERITINA RECLIVATA PALM.IJ Dall. 



Neriiiua rcclivafa pahncr Dall. Pr. \J. S. Nat. ^lus., 1885, p. 259. 

 Type locality : Palma Sola, Fla. 



Genus LEPYRIUIM Dall, 1896. 



Lepyriinn Dall, Naut., X, 1896, p. 15. 

 Type: Ncritina shoivaltcri Lea. 



LEpyrium showaeteri cahawp.Ensis Pilsbry. 



Lepyrinni sJiowalferi cahawbcnsis Pilsbry, Naut., XX, 1906, p. 5r. 

 Type locality : Cahawba River, Ala. 



