OF CONCHOLOGY. 35 



169. G. Etowahensis, Lea. Fig. 224. Conoidal, smooth, 

 thin; spire raised-conical, suture impressed; whorls 7, slight- 

 ly convex ; aperture rather large, sub-rhomboidal, outer lip 

 acute and sinuous, columella bent in and very much twisted. 

 Dark brown, with two broad dark bands. Etowah River, 

 Geo. 



Wider than gracilior, with a larger, more angulate aperture, the whorls 

 more convex and not constricted. 



170. G. translucens, Anth. Fig. 225. Conical ovate, 

 somewhat bulbous, thin, translucent; spire obtuse, suture well 

 impressed; whorls 5, convex, the last large; aperture large, 

 ovate, slightly angular at the base. Light horn-color, with 

 two distant broad dark brown bands. Canada. 



171. G. OVOidea, Lea. Fig. 226. Elliptical, smooth, ra- 

 ther thick; spire obtusely conical, suture slightly impressed; 

 whorls 6, slightly convex ; aperture moderate, ovate. Horn- 

 color, with two indistinct dark bands, white within. Alexan- 

 dria, La. 



A single specimen only was received by Mr. Lea. 



172. G. grata, Anth. Fig. 227. Elongately fusiform, ra- 

 ther thick, shining; spire raised, sharp-pointed, suture regu- 

 larly impressed ; whorls 9, flattened, the last slightly convex ; 

 aperture rather large, sub rhomboidal, outer lip acute and 

 sinuous, columella bent in and twisted. Bright olivaceous,, 

 with generally four dark bands, of which the two middle ones 

 on the periphery are approximate, whitish and banded within. 

 Big Prairie Greek, Ala. 



173. G. quadricincta, Lea. Figs. 228, 229. Conical, 

 somewhat thick, polished; whorls 9 — 10, sloping, the last 

 large and convex ; aperture large, sub-rhomboidal. Bright 

 yellow, with four green bands, of which the two middle ones 

 are approximate, whitish and banded within. Coosa River, 

 Ala.; Geo. 



Larger, more inflated and lighter color than 0. grata. 



17-1. G. flava, Lea. Fig. 230. Obtusely conical, smooth, 

 rather thin; spire obtuse, suture very much impressed; whorls 

 about 6, flattened, the last slopingly convex ; aperture mode- 

 rate, ovate, outer lip acute, slightly sinuous, columella bent 

 in and thickened. Yellow, 3-banded, bands visible within. 

 Benton Co., N. E. A la. 



175. G. tenebrovittata, Lea. Fig. 231. Elongated coni- 

 cal, smooth, rather thin; spire raised, suture slightly impressed; 

 whorls 6 — 8, flattened, the last large ; aperture large, sub- 

 rhomboidal. Yellowish, without or with four bands, which 

 are narrow, and the two middle ones approximate or some- 

 times coalesce into one. Coosa River, A la. 



Larger and more elevated than G. grata, and the bands narrower. 



