PLATE XIII. 



Madracis, Stylophora. 



Page. 

 Figs. 1 to 7. Aladrach ganei sp. nov 128 



Figs. 1, 2, 3, general views, natural size; figs. 4, a, 6, caliees magnified; fig. 4 shows 

 a surface with granular ornamentation; in fif?. 5 the surface markings tend to be 

 in striii" fig. 6. the septa are somewhat broken, and the columella has the gen- 

 eral appearance of being false ; fig. 7, cross section of a branch, natural size. 



Figs. 8 to 11. Madracin Johnson i sp. nov 129 



Fig. 8, a large, fine specimen, natural size; fig. 9, a small branch, natural size; 

 fig. 9a, outline of cross section of this small branch; figs. 10 and 11, calices, 

 enlarged. 



Figs. 12 and 12a. Madracis gre<iorwi sp. nov 130 



Fig. 12, a general view of the corallum, natural size; fig. 12a, calices enlarged. 



Figs. 13 to 15. Stj/lophora mituilissima sp. nov 131 



Fig. 13, general view of corallum, natural size; fig. 14, a calice, x 7; fig. 15, several 

 calices, x 7, also shows surface ornamentation. 



■. iG. 16. Stylophora )ioiiderosa sp. nov 132 



Section through cii'uenchyma, parallel to the lougitudinal axes of the corallites, 

 X 10. 

 All figures drawn by Dr. .1. C. McConnell. 



234 



