NO. 1 CUSHMAN, MCCULLOCH : ARENACEOUS FORAMINIFERA 47 



EXPLANATION OF PLATE 4 



Figs, 



1-5. Reophax dentaliniformis H. B. Brady. 1, X 30. 2, X 25. 



3, 5, X 18. 4, X 50. a, a, a, a, a, front views; b, b, b, b, b, 



apertural views. 



6. Reophax pilulifer H. B. Brady. X 18. 



7-13. Ammofrondicularia compressa Cushman and McCulloch, 

 new species. X 25. 12, Holotype. a, front view; b, aper- 

 tural view. 



