0, crassolamellata -2 6- 
Orbicella erassolamellata var. magnet ica. 
PI. XIII, figs. 4 a, 4 b. 
"A magnificent Astraean, resembling the typical form, but 
having no more than four cycles of septa. The septa are very 
marked, very large at the wall, and resemble the printed radii on 
a mariner’s compass- card. Coenenchyma greatly developed. The 
diameter of the corallites is from l/3 to i/2 inch, being very 
variable. 
Marl- format ion of Antigua. 
Coll. Ceol. Soc 
