PLATE XXVII. 



Lepldocyclina mortoni Cushman, n. sp. (p. 70). 



Figure 1 Vertical section, X 20, showing tlie numerous large, wedge-shaped pillars. „ , , 



Figure 2 Vertical section, X 15, showing the very heavy walls and the comparatively small chamber spaces. 

 Figure 3. Oblique section, X 20, showing the relative arrangement of pillars and chambers. 

 Figure 4. Horizontal section, X 20, showing the equatorial chambers. 



All specimens from bluff at Montgomery, Grant Parish, La. (U. S. G. S. station 4270). ^^ 



131049°— 20 9 



