PLATE XXXV. 



Epiphragmophora Jidelis antecedens. 

 Figs, i, 2, 3. Lateral, vertical, and basal views of the same individual. 



Polygyra dalli. 

 4, 5, 6. Lateral, vertical, and basal views of same individual. 



Ammonitella yatesi prcecursor. 



8 and 9. Lateral and vertical views of an imperfect example. 

 10, II and 12. Lateral, vertical, and basal views of another imperfect ex- 

 ample. 



Pyramidtda perspectiva shnillima, 



7. Vertical view of an imperfect example. 

 Through the courtesy of the Director of the U. S. Geological Survey I have 

 been able to present the figures above indicated. 



(660) 



