C/ 
Is as tre a conferta 
the intercept al loculi into several cells. The reproduction 
is “by submarginal budding. The solerenohyma has been replaced 
by dark homogeneous silica, and the interspaces by porcellanous 
and opaline silica. 
Prom the Chert -format ion of Antigua. Cell. Geol. Soo. 
This is a very remarkable form. Unfortunately no calices 
exist; but the transverse view of the corallites is excellent. 
If the specimen had been found in OOlltic rocks, it would have 
passed for a small variety of Isastraea tenuistriata . " 
