196 MELANIIDA. 
11. Pleurocera prestoniana. 
Trypauostoma Prestoniana, Lea, P. Acad. Nat. Sci. 1864, p. 3 [foot-note}, 
for M. vanuxemit, 1, ¢. 1861 [not IM. vanuxemiana, Lea]. 
7 Ringgold, Georgia; coll. Rev. H. R. Beadle. 
12. Pleurocera subularis. 
Melania subularis, Lea, Philos. Trans, IV, 1832, “ Niagara River.” 
16 Mohawk Rv., New York and Michigan; coll. Rev. E. R. Beadle, &c. 
Sub-Genus STREPHOBASIS, Lea. 
P. Acad. Nat. Sci, Philad, 1861, type S. cornea, Lea, 
Sub-genus of Angitrema, fide Tryon. 
13. Pleurocera [Strephobasis] olivaria. 
Strephobasis olivaria, Lea, Proc. Acad. Nat. Sei, 1862, Knoxville. 
2. Alabama; ex c. Dr. T, Oldham. 
Genus GONIOBASIS, Lea. 
P. Acad. Nat. Sct. Philad. 1862, type [restr.] M. showalter’, Lea. 
1. Goniobasis alabamensis. 
Melania alabamensis, Lea, P. Acad. Nat. Sci., 1861. 
5 Coosa Rv., Alabama; exc. Rev. E. R. Beadle. 
2. Goniobasis boykiniana. 
Melania boykiniana, Lea, P. Philos. Soc., 1840,—°“ Columbus, Geo.” 
4 Georgia; ex c. Prof. W. Newcomb. 
3 Alabama; ex c. Prof. W. Newcomb. 
3. Goniobasis pupoidea. 
Melania pupoidea, Anthony, Ann. Lyc., New York, 1854, Alabama. 
6 Alabama; exc. Rey. E. R. Beadle. 
