0. cellulosa -45- 
straight or curved* The quaternary septa have wedge-shaped 
bases and spike-like prolongations , extend one-quarter the 
distance to the columella, and sometimes curve towards the 
tertiary* Columella lax and parietal. Bndotheoa greatly 
developed, subdividing the septal loculi by transverse bars. 
Exotheca distinct, ceils small* 
T)i me nsions * - --Diameter of the coral lit es l/5 inch; a bud 1 
line in diameter has three cycles. 
Chert-formation of Antigua* Coll. Geol, Soc. As a 
rule, this variety is curiously fossilized, «» 
