PLATE XIX. 



Lepidocyclina gigas Cushman (p. 63). 



Figures 1, 2. Surface views of microspheric specimens, with the umbonal portion not greatly raised, natural size. 



Lower bed, Hodges Bluff, Antigua, Leeward Islands (U. S. G. S. station 6862). 

 FiGUKE 3. Surface view of megalospheric specimen -nith prominent umbo, natural size. Same locality as figures!, 2. 

 Figure 4. Section showing the subequal embryonic chambers and the hexagonal equatorial chambers, X 20. Rifle 



Butts, Antigua, Leeward Islands (U. S. G. S. station 6854). 



Lepidocyclina gigas var. mexicana Cushman, n. var. (p. 63). 



Figupb 5. Transverse section, X 5. Meson formation, Meson, Vera Cruz, ]\Iexico. 



1,31049°— 20 8 ^^ 



