26 AMERICAN JOURNAL 



94. G. subcylindracea, Lea. Fig. 138. Sub-cylindri- 

 cal, elongated, somewhat thick ; spire obtusely elevated, su- 

 ture impressed; whorls 8, convex, the first few slightly plicate, 

 the others smooth ; aperture small, ovate. Horn-color, whitish 

 within. Tenn. 



95. G. baculum, J.?^^/i. Fig. 139. Sub-cylindrical, thick; 

 spire elevated, suture well impressed ; whorls about 10, flat- 

 tened, all but the two last with straight folds ; aperture small, 

 ovate, angular at base. Keddish-brown, with a light line be- 

 low the suture, light red within. Term. 



96. G. concinna, Lea. Fig. 140. Sub-cylindrical, thin"; 

 spire drawn out, suture impressed; whorls 9, flattened, the 

 upper ones closely folded and carinate; aperture small, angu- 

 lar at base. Brown, w^hitish within. Tenn. 



I doubt whether this is really distinct from No. 95. 



97. G. eliminata, Anth. Fig. 141. Conical, narrow, thin; 

 spire slender, elevated, suture impressed ; whorls 8. somewhat 

 flattened, carinate above the suture, with revolving lines on and 

 above the carina, the upper whorls obscurely folded; aperture 

 small, angular at base. Brown. Owenshoro, Ky. 



98. G. teres, i^e«. Figs. 142, 143. Acutely turrited, thin ; 

 spire drawn out, suture impressed; whorls 9, convex, slowly 

 increasing, the upper ones folded ; aperture small, elliptical. 

 Horn-color, white within. Term. 



Fig. 143 represents O. terebralis. Lea, a shell not quite adult. 



99. G. gracillima, Anth. Fig. 144. Acutely turrited, 

 narrow, thin ; spire very slender, elevated ; whorls 8, convex, 

 the upper ones folded and striate, the lower ones smooth, the 

 strii© being replaced by indistinct, slender, brown lines ; the 

 lower part of each whorl carinate ; aperture small. Brown, 

 banded within. S. Car. 



100. G. Clarkii, Xea. Fig. 145. Club-shaped, thin; spire ele- 

 vated, much drawn out, suture somewhat impressed ; whorls 10, 

 flattened, ths last swollen ; aperture small, elliptical, produced 

 and angled at the base. Dark brown, same color within. Duck 

 Creek, Tenn.; Tjee Co., Geo. 



101. G. De Campii, Lea. Fig. 146. Elongated, very much 

 attenuated, thin ; spire subulate, suture linear ; whorls 10, flatly 

 convex, upper ones closely plicate, a little angled above the 

 suture. Corneous, whitish within. Huntsville, Ala. 



103. G. plicifera, Lea. Figs. 147 — 149. Turrited, some- 

 what thick ; spire elevated, suture well impressed ; whorls 9 

 convex, smooth or closely striate, with prominent curved ribs 

 Dark horn-color. Oregon. 



