Astroria pelygonalis 
lite they are few, and resemble those of an Astraea with a low 
septal number# A small undeveloped coral lite gives six systems, 
two cycles in some and three in other systems. Length of each 
series 9 l/3 lines; three septa to l/lO inch; the width varies, 
from the ends of the series being pointed* Width of the largest 
corallites not forming series l/z inch, of the smallest l/4 inch. 
En do thee a, abundant and oubvesicular. 
Prom the Chert -format ion of Antigua. Coll. Geol. Soc. 
The lithological character of this specimen is very interest- 
ing, the interspaces being filled with opalescent and opaque- 
white silica 
