PLATE XII. 



Lepidocyclina mantelli (Morton) Giimbel (p. 57). 



Figure 1. Surface view, X 2, megalospheric form. St. Stephens Bluff on Toml)igl)ee River, Ala. (U. S. G. S. 

 station 298). 



Figure 2. Surface view, X 2, microspheric form. West l^ank of Conecuh River at bend about a quarter of a mile below 

 mouth of Sepulga River, Escambia County, Ala. (U. S. G. S. station 6748). 



Figure 3. Surface view, X 2, microspheric form. 7 miles west of Claiborne, 2 miles east of Howards Landing, Monroe 

 County, Ala. (U. S. G. S. station 2397). 



Figure 4. Transverse section, X 10, showing the very slight increase in the height of the equatorial chamliers. Lime- 

 stone 6 miles southeast of Shubuta, on Carson Creek, Miss. (U. S. G. S. station 2636). 



Figure 5. Transverse section, X 15. North side of Salt Mountain, 5 miles south of Jackson, Clarke County, Ala. 

 (U. S. G. S. station 3296). 

 82 



