OP coNCHOLoav. 313 



62. P. Knoxense, Lea. Fig. 124, Conical, smootli, rather 

 thick ; spire somewhat attenuate, pointed ; suture impressed ; 

 whorls 8, slightly convex, carinate above; aperture small. 

 Ferruginous, sometimes with a light line below the suture, or 

 two well-defined, broad, brown bands. Flat Greek, Knox Co., 

 Tenn. 



63. P. altipetum, Anth. Fig. 125. Elevated, conical, 

 smooth, thick ; spire elevated, carinate above ; whorls 10, con- 

 vex, narrow, small, crowded, striate above; body whorl 

 smooth ; aperture small, elliptical, with a narrow produced 

 fuse. Horn-color, banded at base, sometimes above the pe- 

 riphery also. Raccoon Greek^ Vinton Go., Ohio. 



63a. P. Ocoeense, Lea. Fig. 126. Conical, smooth, some- 

 what thick ; spire obtuse, towards the apex lined ; suture im- 

 pressed ; whorls 7, slightly convex ; aperture small, ovate. 

 Dark horn-color, bluish within. Occee District, Tenn. 



63b. P. corneum, Lea. Fig. 127, Exserted, striate, thin, 

 diaphanous; spire elevated; suture regularly impressed; 

 whorls 8 ; sub-convex ; aperture elongate, constricted, elliptic. 

 Light horn-color. Tenn. 



63c. P. venustum, Lea. Fig. 128. Acuminate, narrow, 

 smooth, thin, mucronate; spire elevated; suture impressed; 

 whorls 9, planuate; aperture oval, a little attenuate at base. 

 Yellowish horn-color. Big Prairie Creek, Ala. 



64. P. hastatum, A7ith. Fig. 129. Elevated, conical, 

 smooth, rather solid; spire obtusely elevated ; whorls 8 — 9, 

 slightly convex, occasionally spirally striate, the upper ones 

 sub-carinate ; body whorl sub-angulate ; aperture small, pyri- 

 form. Dark chestnut, with a narrow yellowish band just 

 under the angle ; aperture purple within. Ala. 



65. P. Lyonii, Lea. Elevated, conical, smooth, mode- 

 rately thick ; spire sub-elevated ; suture impressed ; whorls 

 6, convex, the last large ; aperture small, ovate. Grreenish- 

 brown. £J. Tenn. 



QQ. P. viridulum, Anth. Fig. 130, Conical, smooth, 

 rather thick ; spire moderately elevated ; suture impressed ; 

 whorls 8 — 9, slightly convex; aperture small, elliptical; lip 

 augur-shaped, extending forward at base, and forming a broad 

 sinus. Olive green, whitish within, never banded. Tenji. 



Exceedingly uniform in its characters, and peculiar in its shade of color, 



69. P. striatum, Lea. Figs. 131, 132. Attenuate, rather 

 thin ; spire raised ; suture much impressed ; whorls 8, some- 

 what convex, with two or three strife, the middle one rising 

 almost to a carina ; on the body whorl there is one stria only, 

 just below the suture; aperture oval, broadly truncately fused 

 below. Horn-color, without bands. Florence, Ala. 



Fig. 131 is typical ; Fig. 132 is rostellatum, Lea. 



