St. antiguensis -I6- 
Stylophora antiguensis sp# nov. 
PI. 
figs. 
1901. Stylophora sp. Vaughan, Quart* Jour. Geol. Soc. London, 
Vol. LVII , p. 497. 
1902. Stylophora sp. Vaughan, Quart. Jour. Geol. Soc. London, 
Vol. LVIII, p. 358. 
Corallum ramose, branches flattened, large in lower portion, 
the terminal branches sometimes much compressed, may be swollen 
at the ends. The views of the specimens PI. , figs, 
give a correct idea of the form and size of two specimens. 
The calices are shallow, irregularly arranged, their 
diameter averages about 1 mm* , they are separated by coenenchyma 
varying from a very narrow ridge to as much as 1 nan. across in 
very rare instances, usually the distance from one calice to the 
next is about half the diameter of a calice. There is either no 
elevated calioular rim or only an extremely slight depression be 
