250 NEW MELANIDjE OF THE UNITED STATES. 



and the base is subangular. The aperture is more than one half the length of the shell. 

 The hem is large and well defined. It is near to virens (nobis) in outline and size, 

 but differs entirely in the color, bands and shoulder. 



Schizostoma Alabamense. Pi. 35, fig. 54. 



Testa striata, elliptica, robusta, luteo-olivaeea, imperforata ; spira obtuso-conoidea ; suturis valde impressis ; 

 anfractibus senis, vittatis, subinflatis, ultimo pergrandi ; fissura obliqua subbrevique ; apertura sub- 

 grandi, ovata, intus vittata, ad basim obtuse angulata ; columella alba, inferne et superne parum 

 incrassata; labro acuto, sinuato. 



Shell striate, elliptical, stout, yellowish-olive, imperforate ; spire obtusely conical ; 

 sutures very much impressed ; whorls six, banded, rather inflated, the last very large, 

 fissure oblique and rather short ; aperture rather large, ovate, banded within and ob- 

 tusely angular at the base ; columella white, somewhat thickened above and below ; 

 outer lip sharp and sinuate. 



Schizostoma Alabamense, Proe. Acad. Nat. Sci., 1860, p. 187. 



Hob.— Alabama, B. W. Budd, M. D, and E. R. Showalter, M. D. 



My cabinet and cabinets of Dr. Budd and Dr. Showalter. 

 Diam. -50, Length -90 inch. 



Remarks. — The specimen from Dr. Budd has been a long time in my possession, and 

 was considered to be an inflated variety of excisa, but specimens recently received from 

 Dr. Showalter satisfy me that it is distinct. It is among the largest of the genus, 

 being nearly an inch long, and may be distinguished by its robust form and its regu- 

 lar elliptical outline. The specimens before me have three broad, dark purple bands 

 within, which give an indistinct dark green hue to the outside, and stop short of the edge. 

 The lip-cut stands well out, and the hem-like margin is distinct and yellowish. The 

 base of the columella is yellowish. The aperture is half the length of the shell. The 

 hem is yellow, broad and well marked. 



Schizostoma Spillmanii. PI. 35, fig. 55. . 



Testa striata, subcylindracea, subcrassa, luteo-fusca, imperforata ; spira obtuse, conoidea ; suturis im- 

 pressis ; anfractibus senis, valde vittatis, planulatis, ultimo grandi; fissura obliqua subbrevique; 

 apertura grandi, ovata, intus vittata, ad basim obtuse angulata ; columella alba, superne incrassata ; 

 labro acuto sinuatoque. 



Shell striate, subcylindrical, rather thick, yellowish brown, imperforate ; spire ob- 

 tuse, conoidal ; sutures impressed ; whorls six, very much banded, flattened, the last 

 large ; fissure oblique and rather short ; aperture large, ovate and banded within, ob- 

 tusely angular at the base ; columella white, thickened above ; outer lip sharp and 

 sinuous. 



Operculum ovate, spiral, rather large, dark-brown, with the polar points near to the 



left edgt^ «bout l-5th above the basal margin. 



Schizostoma Spillmanii, Proc. Acad. Nat. Sci., 1861. p. 54. 



