NEW MELANIDiE OF THE UNITED STATES 301 



Operculum ovate, rather thin, dark brown, with the polar point near the inner 

 inferior edge. 



Proe. Acad. Nat. Sci.. March 20, 1860. 



Hab. — Upper des Chutes River, Oregon Territory, J. S. Newberry, M. D. 



My cabinet and cabinet of Dr. Newberry. 

 Diam. -30, Length -64 inch. 



Remarlcs. — This is a rather small species, very nearly allied to Melania (Goniobasw) 

 Taitiana (nobis), from Claiborne, Alabama, but differs in being rather more inflated, 

 of a darker color, and having three dark bands instead of four. The bands in New- 

 berryi are broad and dark, sometimes running into each other, while the Taitiana 

 has thinner ones of a lighter color. In some specimens of the latter the bands are 

 absent, but I have seen no specimen of the former without bands. These give a dark 

 appearance to the shell, which is well relieved by the yellow margin under the 

 sutures. I have great pleasure in naming it after Dr. Newberry, the discoverer of it. 



GONIOBASIS TENEBROVITTATA. PI. 37, fig. 136. 



Testa lasvi, elevatc-conica, subtenui, flavesceute vel vittata vel evittata ; spira subelevatil ; suturis parum 

 impressis; aufractibus planulatis ; aperturfi subgvandi, subrhornboidea, intus albida ; labro acuto. 

 parum sinuoso; columella aliquanto inflects. 



Shell smooth, high conical, rather thin, yellowish, banded or without bands ; spire 

 somewhat raised ; sutures slightly impressed ; whorls flattened ; aperture rather 

 large, subrhomboidal, whitish within ; outer lip acute, slightly sinuous ; columella 

 somewhat bent in. 



Operculum ovate, dark brown, with the polar point near the edge above the 



basal margin. 



Proc. Acad. Nat, Sci., 1S62, p. 264. 



Hob. — Coosa River,. W. Spillman, M. D. 



My cabinet and cabinet of Dr. Spillman. 

 Diam. -43, Length 1-07 inch. 



Remarks. — This species is allied to Melania (Goniobasis) grata, Anth., which puts on 

 many phases. It may be at once distinguished, however, by graia being more 

 pointed, having a more yellow epidermis and narrower bands. Two out of ten 

 specimens before me, have a greenish epidermis, and are without bands. One speci- 

 men has a purplish interior. The prevailing character of the bands is, two being 

 proximate in the middle, and two, one above the other below, being more removed. 

 The two middle ones are sometimes closed, forming a single broad band. The aper- 

 ture is more than one-third the length of the shell. 



77 



