OF CONCHOLOOY. 335 



17. S. Wetumpkaense, Lea. Figs. 17, 18. Ovately 

 conical, striate, thick ; spire obtuse, conoidal ; suture much 

 impressed ; whorls 6, flattened, carinate and ridged, the last 

 large, angular at periphery ; fissure short, oblique. Light 

 brown, banded. 



Fig. 17 is typical ; Fig. 18 is ornata, Anth. 



18. S. Alabamense, Lea. Fig. 19. Elliptical, thick, 

 closely and regularly striate ; spire obtusely conical ; suture 

 much impressed ; whorls 6, the last large, inflated, cylindrical; 

 fissure short, oblique ; aperture ovate. Yellowish-olive, with 

 broad brown bands, 



19. S. Anthonyi, i?eet'e. Figs. 20, 21. Conical, ovate, ra- 

 ther thick ; spire produced ; whorls sloping round the upper 

 part, concavely impressed round the middle, the last with a 

 single dark ridge ; fissure short. Fulvous brown, narrowly 

 banded. 



20. S. babylonicum, Lea. Figs. 22 — 24. Sub-cylindrical, 

 striate, rather thick ; spire obtuse, conoidal ; suture impressed ; 

 whorls 6, flattened, the last large ; fissure oblique, short ; aper- 

 ture large, ovate, obtusely angular at base. Yellowish-brown, 

 with 3 — 4 heavy bands. 



Fig. 22 is typical ; Figs. 23 and 24 are Spillmanii, Lea. 



21. S. Buddii, Lea. Figs. 25, 26. Sub-fusiform, striate, 

 thick; spire obtusely conical; suture irregularly impressed; 

 whorls 6, rather inflated; fissure small, oblique; aperture 

 large, rhomboidal. Dark horn or chestnut, sometimes banded. 



Fig. 2G is Sell, funiculatitm, Lea. 



22. S. demissum, ^n^/^ Figs. 27, 28. Cylindrical, short, 

 thick, wide; spire conoidal, eroded; suture very much im- 

 pressed ; whorls flattened, rugose ; fissure straight, broad and 

 rather deep. Dark horn-color. 



Fig. 27 is typical ; Fig. 28 is Uartmanii, Lea. 



23. S. constrictum, Ljea. Figs. 29, 30. Fusiform-cylin- 

 drical, smooth, somewhat thin; spire obtuse; suture beaded, 

 and much impressed; whorls 5, constricted in the middle; 

 fissure rather large, somewhat oblique; aperture large, narrow- 

 ovate. Yell<)wish' horn -color. 



Fig. 30 is Sch. rectum, Anth. 



23a. S. Showalteriana, Ljea. Fig. 31. Cylindrical, nar- 

 row, smooth, thick; spire exserted ; suture well impressed, 

 beaded; whorls 5, slightly convex; body whorl very small; 

 fissure small ; aperture small, elliptical. Yellowish-brown, 

 without bands. 



