202 MELANIIDE. 
They do not agree well with Tryon’s figures. 
29. Goniobasis acuta. 
Melania acuta, Lea, Philos. Trans. IV, 1882—Tennessee River. 
4 New York; ex c. Prof. W. Newcomb. 
30. Goniobasis laeta. 
Melania laeta, Say. 
3 Alabama; ex c. Prof. W. Newcomb. 
31. Goniobasis continens. 
Goniobasis continens, Lea, P. Acad. Nat. Sei., 1862—North Alabama. 
5 Alabama ; ex c. Prof. W. Newcomb. 
Sub-Genus SCHIZOSTOMA, Lea. 
Amer. Phil. Soc. 1842, type M. excisa, and P. Acad. Nat. Sei. Philad. 1860 
[not of Bronn, 1835, which—LHuryomphalus]; =Schizochilus, Lea, 
Trans, Amer. Phil. Soc., 1852 ;=Gyrotoma, Shut, 1845. 
Fide M. Brot, distinct Genus, as Gyrotoma, Shut., including 
Meseschiza, Lea. 
32. Goniobasis [Schizostoma] babylonica. 
Melania babylonica, Lea, Philos. Proce, IV, 1845—Ohio. 
2 Alabama; exc. Rev. E. R, Beadle. 
Sub-Genus MESESCHIZA., Lea. 
P. Acad. Nat. Sci. Philad., 1864, type M. grosvenorii, Lea. 
Not represented in the Museum. 
Genus ANCULOSA, Say. 
J. Acad. Nat. Sci., 1821, type Mel. praerosa, Say ;=Leptoxis, Brot and 
Auct, [as of Rafin. 1819]. 
1. Anculosa costata. 
Anculotus costatus, Anthony, J. Bost. S. ITE, 1840, Cincinnati. 
6 Ohio; ex c. Dr. F. Stoliczka. 
