330 AMERICAN JOURNAL 



7. St. corpulenta, Anth. Fig. 10. Smooth ; spire coni- 

 cal ; apex rather acute ; whorls 6 — 7, convex, closely revolving 

 and rapidly increasing in diameter ; body whorl much inflated, 

 cylindrical ; aperture narrow-ovate, broader at base. Yellow- 

 ish, with 2 dark broad bands. Ala. 



Body whorl more swelled out in its superior portion than either of the 

 preceding. 



8. St. bitseniata, Conr. Fig. 11. Smooth; spire short, 

 conic, eroded; whorls 5; body very convex, cylindrical; 

 aperture sub-rhomboidal, half the total length, much recurved 

 at base. Olive, with two distant broad brown bands. Black 

 Warrior River, Ala.; Chattanooga^ Tenn. 



Smaller than the preceding species of the group. 





