306 NEW MELANID/E OF THE UNITED STATES. 



mens before have any appearance of bands. The larger of the two is not complete 

 on the outer lip, but the smaller one is perfectly so, and shows a disposition to 

 thickening on the inner edge. The aperture is about nearly one-half of the length 

 of the shell. 



Goniobasis Oi-iioensis. PL 37, tig. 144. 



Testa lasvi, eonica, subteuui, evittata ; spira, obtuse eonica, mucronata, ad apicem carinata; suturis valde 

 impressis; anf'ractibus instar novenis, convexis ; apertura parva, subrotunda, intiis alba; labro acuto, 

 vix sinuoso; columella inflecta, valde incrassata. 



Shell smooth, conical, somewhat thin, without bands ; spire obtusely conical, 

 sharp-pointed, carinate at the apex ; sutures very much impressed ; whorls about 

 nine, convex ; aperture small, somewhat rounded, white within ; outer lip acute, 

 scarcely sinuous; columella bent in, very much thickened. 

 Proc. Acad. Nat. Sci., 1862, p. 265. 



Ilab. — Yellow Springs, Ohio. 



My cabinet. 

 Diam. -31, Length -65 inch. 



Remarks. — Many years since two specimens of this species were brought by a 

 member of my family from the Yellow Springs, of Ohio, a much frequented watering 

 place. They are both dead specimens, but are well preserved in form, while the 

 epidermis has been entirely removed. The columella is remarkably thick, and the 

 edge stands off from the whorls, displaying an impression at the axis amounting 

 nearly to an umbilicus. It is nearly allied to Orosvenorii herein described, but may 

 be distinguished in having a shorter spire, less impressed sutures, a thicker columella, 

 and having an umbilical impression. The outer lip also is not so sinuous and the 

 whorls are not so attenuate. It has affinities to Melania ( Goniobasis) varicosa, Ward, 

 but has a different aperture and has no veins. The aperture is about two-sevenths 

 the length of the shell. 



Goniobasis cinerea. PI. 37, fig. 145. 



Testa la3vi, conoidea, tenui, cinerea, fulgida ; spira obtuse eonica, mucronata, ad apicem carinata ; suturis 

 valde impressis ; anfractibus octonis, convexiusculis ; apertura submagna, subrhomboidea, intiis 

 cajruleo-alba ; labro acuto, parum sinuoso ; columella incurva, parum incrassata et purpurescente. 



Shell smooth, conical, thin, ash-gray, bright; spire obtusely conical, sharp-pointed, 

 carinate at the apex ; sutures very much impressed ; whorls eight, somewhat convex ; 

 aperture rather large, subrhomboidal, bluish white within ; outer lip acute, somewhat 

 sinuous: columella bent in, slightly thickened and purplish. 



Proc. Acad. Nat, .Sci., 1862, p. 265. 



Hab— South Carolina, Prof. L. Vanuxem. 

 My cabinet. 

 Diam. -25. Lenath -60 inch. 



