NEW MELANID/E OB 1 THE UNITED STATES 253 



Hah. — Alabama, E. R. Showalter, M. D. 

 . My cabinet and cabinet of Dr. Showalter. 

 Diam. -32, Length -48 inch. 



EemarJcs. — This is a very small globose species, more rounded and inflated than 

 any other which has come under my notice, and it is the smallest which I have 

 seen. The description being made from two specimens only, it may be found 

 to vary when others are observed. In this specimen the three bands are broad 

 and of a dark brown, the two upper ones having on the outside raised stria? 

 running parallel to the edges. The aperture is large, and is rather more than half 

 the length of the shell. The impression made by the lip-cut is well defined and forms 

 a narrow helm-like line below the suture. This species is not likely to be confounded 

 with any of the species known, being smaller than all but laciniatum (nobis), which 

 is more conical. The aperture is nearly two-thirds the length of the shell. 



SCHIZOSTOMA VIRENS. PI. 35, fig. 59. 



Testa subnodulosa, valde infiata, subcrassa, tenebroso-viridi, exilissime striata, imperforata ; spira obtusa • 

 suturis impressisj anfractibus subplanulatis et trivittatis ; fissura obliqua brevique ; apertura elongatS, 

 subpyrifomii, intus tenebroso-vittata ; columella superne albida et incrassata; labro aeuto, sinuate. 



Shell very slightly nodulous, very much inflated, rather thick, dark green, very 

 minutely striate, imperforate; spire short; sutures impressed; whorls rather flattened 

 and with three bands ; lip-cut oblique, short ; aperture elongate, nearly pear-shaped, 

 within darkly banded ; columella whitish and thickened above ; outer lip sharp and 

 sinuous. 



Operculum ovate, dark brown, with the polar point near to the inner lower edge. 

 Schizostoma virens, Proc. Acad. Nat. Sci., 1860, p. 187. 



Hob. — Coosa River, Alabama, E. R. Showalter, M. D. 



My cabinet and cabinet of Dr. Showalter. 

 Diam. -32, Length -50 inch. 



Bernards. — This is rather a small species, at least the specimens before me indicate 

 this. There appear to be about six whorls, the upper ones being disposed to put on 

 indistinct folds. The lower whorl is flattened on the middle, has a distinct shoulder 

 above, the top of which is yellowish. It is furnished with three dark broad bands. 

 There is no appearance of a hem below the suture. The upper whorls are slightly 

 inflated. The lines of growth are distinctly marked. The aperture is nearly two- 

 thirds the length of the shell, and the base is subangular, and disposed to form a 

 channel like Lithasia. The three dark broad bands are well marked within the aper- 

 ture. This species is nearer in general outline and color to bulbosa, Anth., than any 

 which have come under my notice, but it does not belong to the deep fissured group 

 and the spire is by no means so high. The aperture is more than half the length of 



the shell. 



65 



