18 AMERICAN JOURNAL 



22b. G. vesicula, Lea. Fig. 46. Elliptical, thin; spire 

 very short, obtuse, suture not very distinct; whorls 3, some- 

 what convex, obscurely tuberculate above; aperture large, 

 long-ovate. Yellow, not banded, salmon-color within. Ala. 



c. Shell plicate. 



23. G. obesa, Anth. Fig. 47. Globosely-ovate, solid; spire 

 short, conical, rather immersed, suture slightly impressed ; 

 whorls 5, slopingly rounded, obsoletely plicate, the last very 

 large, spirally ridged towards the base. Fulvous, with ob- 

 scure, narrow, olive-green bands. Ala. 



24. G, blanda, Lea. Fig. 48. Obtusely fusiform, obtusely 

 conical above, rather thin; spire very obtuse, suture impressed; 

 whorls 5, flattened above, obscurely folded, the last large, sub- 

 angular; aperture rather large, elliptical. Dark horn-color, 

 yellowish- white within. Yellow Leaf Greek, Ala. 



26. G. aequalis, Raid. Fig. 49. Short conical, thick ; 

 spire conical, suture slightly impressed; whorls 5, sloping, 

 flatly convex, longitudinally folded, the last large, angulate 

 on the periphery ; aperture narrow elliptic, as long as the 

 spire. Reddish- brown. Nolachuchy River, Tenn. 



27. G. semigradata, Reeve. Fig. 50. Pyramidally coni- 

 cal, thick ; whorls 5S, flatly sloping, and sharply angulate 

 and carinate ; first few whorls plicate, the last with two cari- 

 nas ; aperture ovate, a little effused at base. Fulvous olive, 

 with a green band. Ala. 



28. G. carinocostata, Lea. Figs. 51 — 54. Elevated coni- 

 cal, rather thin ; spire elevated, suture sulcate ; whorls 7, flat- 

 tened, carinate and plicate, plicae not reaching to middle of 

 body whorl. Wax-yellow to dark brown, whitish or brownish 

 within, sometimes banded. Tenn. Ala. Geo. 



Fig. 51 represents the type; Figs. 53 and 54 are scabrella, Anth., younger 

 shells. 



28a. G. strenua, Ley. Fig. 55. Sub-fusiform, rather thin; 

 spire raised, suture very much impressed ; whorls 7, convexly 

 flattened ; distantly folded on the spire, and carinate above the 

 suture ; body whorl convex, without folds or carina. Brown- 

 ish-olive or yellowish horn-color, white or brownish within. 

 Benton County, N. E. Ala. 



28b. G. perstriata, Lea. Fig. 57. Acutely conical, rather 

 thin ; spire elevated, somewhat attenuate, at the apex carinate 

 and granulate, suture deeply impressed; whorls 7, convex, 

 striate, the last not angled; aperture small, elliptical. Cinna- 

 mon-brown. Coosa River, Ala. 



