24. Goniobasis decorata. 



Melania decorata, Anthony, P. Acad. Nat. Sci., I860. 

 6 Alabama; coll. Rev. E. R. Beadle. 



25. Goniobasis hydei. 



Melania hydeii, Conrad, New freshwater Shells, 1824. 



3 Georgia ; ex c. Prof. Newcomb. 



26. Goniobasis plicifera. 



Melania plicif era, Lea, Philos. Trans. VI, 1836 Wahlamat, near junction 

 with the Columbia River. 



1 Oregon [?] ; ex c. A. Morelet, Esq. 



A magnificent specimen of the rare typical form, as figured 

 in the Amer. J. Conch. I, pi. XXIV, fig. 3. 



var. oregonensis. 



Melania plicifera, var. oregonensis, Tryon, Amer. J. Conch. I, 1864, pi. 

 XXIV, fig. 4, Oregon. 



10 Oregon; ex c. Prof. W. Newcomb, &c. 



var. bulimoides. 



Melania plicifera, var. bulimoides, Tryon, I. c., fig. 5-6, Oregon. 

 8 Oregon ; ex c. Prof. W. Newcomb. 



27. Goniobasis carinifera. 



Melania carinifera, Lamarck, Hist., 1822. 

 12 Georgia; ex c. Prof. Newcomb. 



var. bella. 

 Melania bella, Conrad, New freshwater Shells, App.,1834. 



4 Alabama ; ex c. Prof. W. Newcomb. 



28. Goniobasis bulbosa. 



Melania bulbosa, Gould, P. ost. S. II, 1847 Columbia River. 

 12 California ; ex c. Profs. E. C. Stearns and W. Newcomb. 



