NEW MELANID/E OF THE UNITED STATES. 333 



down from Ihe apex. Teres is not striate. In the aperture there is also a difference. 

 The aperture is about two-sevenths the length of the shell. 



GONIOBASIS MACELLA. PI. 38, fig. 192. 



Testa carinata, subulata, tenui, olivacea, evittata ; spira subattenuate ; suturis valde inipressis ; anfractibus 

 septeuis, coiivexiusculis ; apertura parvisshua, siibvhomboidea, intiis albida, ad basim maculata ; labro 

 acuto, parum sinuosn ; columella ineurvii et aliquanto contorts.. 



Shell carinate. awl-shaped, thin, olivaoeous, without bands ; spire subattenuate ; 

 sutures very much impressed ; whorls seven, somewhat convex ; aperture very small, 

 subrhomboidal, whitish within ; spotted at the base ; outer lip acute ; slightly sinuous ; 

 columella bent in and slightly twisted. 



Operculum ovate, thin, light brown, with the polar point well in from the left of 

 margin. 



Proc. Acad. Nat. Sci., 1862; p. 270. 



Hob. — Coosa River, Alabama, Prof. Brumby. 



My cabinet. 

 Diam, -22. Length -62 inch. 



Remarles. — This is a little species received from Professor Brumby a long time since. 

 It is closely allied to rubella, herein described, but differs in being somewhat smaller, 

 in color, in having rather flatter whorls and in having a brown elongate spot at the base 

 of the columella inside. The few specimens before me are minutely veined on the 

 lower whorl. The upper whorls are carinate and substriate. The aperture is about 

 one-fourth the length of the shell. 



»a« 



GONIOBASIS RUBIGINOSA. PI. 38, fig. 193. 



Testa carinata, aliquautulum subulata, subteuui, f'ulgida, rubiginosa, obsolete vittata; spira subattenuate ; 

 suturis iuipressis; anfractibus instar senis, convexis; apertura parvissima, subrbomboidca, intus dilute 

 rubiginosa et obsolete bivittata ; labro acuto, sinuoso ; columella, parum incurvS, et contorta. 



Shell carinate, somewhat awl-shaped, rather thin, shining, reddish, obscurely banded; 

 spire subattenuate ; sutures very much impressed ; whorls about six, convex ; aper- 

 ture very small, subrhomboidal, pale reddish and obscurely double-banded within ; 

 outer lip acute, sinuous; columella slightly bent in and twisted. 



Operculum, broadly ovate, dark brown, with the polar point near the left mar- 

 gin above the base. 



Proc. Acad. Nat. Sci. 1862, p. 270. 



Hah. — Oregon, W. Newcomb, M. D. 



My cabinet and cabinet of Dr. Newcomb. 

 Diam. -27, Length 74 inch. 



Eernarlcs. — Two specimens only were sent to me by Dr. Newcomb. The four upper 



