OF CONCHOLOGY. 25 



85. G. circincta, Lea. Fig. 126. Turrited, rather thin; 

 spire drawn out, suture slight ; whorls 9, slightly convex, 

 centrally carinate, striate, the first few plicate. Pale yellow, 

 banded. Tenn. 



86. G. athleta, Anth. Figs. 127—129. Conical, nearly 

 smooth, rather thick ; spire much elevated, suture moderate ; 

 whorls 10, nearly flat, with faint ribs, more prominent on the 

 upper ones. Dark horn-color or greenish, white within. Tenn. 



Fig. 128 is 0. glauca, Anth., and Fig. 129 is 0. Lyonii, Lea. 



87. G. curvicostata, Anth. Figs. 130, 131. Turrited, 

 thick ; spire much elevated, suture slightly impressed; whorls 

 8, slightly convex, with strong, curved costae. Burnt-olive, 

 purplish within. Florida. 



Fig. 131 is Q. densecostata, Reeve. 



88. G. striatula, Lea. Fig. 132. Conical, rather thin; 

 spire somewhat elevated, suture impressed ; whorls 8, convex, 

 closely striate, carinate above and plicate. Dark brown, red- 

 dish within. Tenn. 



89. G. tripartita, Reeve. Fig. 133. Acuminately conical, 

 somewhat thick ; spire elevated, suture moderate ; whorls 9, 

 moderately rounded, distantly spirally ridged ; the first few 

 whorls strongly carinated, then plicate, and afterwards smooth. 

 Olive. ? 



90. G. decora, Lea. Fig. 134. Acutely turrited, rather 

 thin; spire acute, elevated, suture impressed; whorls 9, rather 

 flattened, with close ribs and striae on all but the two lower 

 whorls. Horn-color, whitish within. Green River, Ky.; Tenn. 



91. G. crebricostata, Lea. Fig. 135. Elevated conical, 

 rather thick ; spire much elevated, suture linear ; whorls 7, 

 flattened, covered with close, slightly curved folds; aperture 

 small, elliptical, angular below. Horn-color, bluish within. 

 Robinson Co., Tenn. 



92. G. comma, Conr. Fig. 136. Subulate, much elonga- 

 ted, slender ; whorls 8 or 9, flattened, suture much impressed, 

 with longitudinal, distant, slightly arcuated ribs, disappearing 

 on the lower whorls; aperture small, rhomboidal, angular 

 below. Olive, with a dark band above the middle. Black 

 Warrior River, Ala. 



93. G. acuta, Lea. Fig. 137. Acutely turrited, thin; 

 spire elevated, acute, suture moderate; whorls 8, flattened, 

 carinate immediately above the suture, the first few plicate, 

 striate; aperture small, acutely angular at base. Horn-color. 

 Tennessee River. 



