252 NEW MELANIDiE OF THE UNITED STATES. 



nearly a whole inch in size. In general outline this species approaches S. Buddii 

 (nobis), but it is more cylindrical when full grown, and generally has bands.- 

 Besides it is umbilicate, while Buddii is not. Usually WetumpJcaense is striate 

 and banded, but it is not universally the case. The aperture is less than half 

 the length of the shell. The hem is yellowish and not well marked. 



SCHIZOSTOMA PUMILUM. PI. 35, fig. 57. 



TesU striata, turbonata, subtenui, pallido-cornea, imperforata ; spirS, valde obtusa ; suturis valde im- 

 pressis ; anfractibus senis, ventricosis, ultimo pergrandi ; fissura recta, subbrevique ; apertura par- 

 viuscula, ovata, intus alba, ad basim angulata et subcanaliculata ; columella alba, contorts,, inferne 

 incrassata; labro acuto, sinuato. 



Shell striate, top-shaped; rather thin, pale horn-color, imperforate ; spire very ob- 

 tuse ; sutures much impressed ; whorls six, ventricose, the last very large ; fissure 

 straight and rather short ; aperture rather small, ovate, white within, angular at the 

 base and somewhat canaliculate ; columella white, twisted and thickened below ; outer 

 lip acute and sinuous. 



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



Bab.— Alabama, B. W. Budd, M. D. 



My cabinet and cabinet of Dr. Budd, New York. 

 Diam. -40, Length -63 inch. 



Rernarlcs. — This is a rather small dwarfish looking species, nearly as wide as it is 

 long, which I have had for a long time from Dr. Budd. One of the specimens has a few 

 obscure bands. It is nearly allied to glandula (nobis), but the spire is higher, and it 

 is striate, while the other is not. It is not likely to be confounded with glans (nobis,) 

 as that is a large species with a higher spire. The hem-like line left by the lip-cut 

 is large and well-defined round the whorls. The aperture is about half the length of 

 the shell. One of the specimens before me has three indistinct bands. The other two 

 have none. 



Schizostoma globosum. PL 35, fig. 58. 



Testa transverse striata, globosa, subtenui, luteola, imperforata ; spirit curta, obtuse conoidea; suturis 

 impressis ; anfractibus quaternis, triyittatis, ultimo grandi ; fissura recta, angusta brevique ; apertura 

 subgrandi, elliptica, intus vittata, ad basim angulata ; columella alba, incurvata ; labro acuto, expanso. 



Shell transversely striate, globose, rather thin, yellowish, imperforate ; spire short, 

 obtusely conical ; sutures impressed ; whorls four, three-banded, the last large ; lip- 

 cut straight, narrow and short; aperture rather large, elliptical, banded within 

 and angular at the base ; columella white, incurved ; outer lip sharp and expanded. 

 Operculum ovate, rather light brown, with the polar point near the inner lower 

 edge. 



Schizostoma globosum, Proc. Acad. Nat, Sci.. I860, p. 1ST. 



