0. crassclameliata ~33< 
• " sj! 
Orbicella orassol&mellata var, magnifica. 
PI. XIII, fig. 3. 
“In the smaller corallites of this variety the spear-shaped 
septa are seen; but in the larger, where there are from twelve to 
fourteen septa in a system, the primary, secondary, and tertiary 
orders are nearly equal in size. They have lost the extreme 
relative thickness between their extremities, and, although still 
very thin at the columella, they are not greatly developed at the 
wall. In some corallites the septa, in transverse view, are not 
straight, but form curving radii*; and in all, the relation which 
the septa bear to the interseptal spaces and to the wall is very- 
much exaggerated. 
Corallites circular in transverse section; they vary much 
in diameter, and are now and then crowded, but generally have 
much coenenchyma between them. The diameters of five corallites 
are as follows: — 5/6 inch, 2/3 inch, 1 inch, 1 l/lO inch, l/2 
inch. Walls very indistinct. Costae small, and appearing to be 
l.^Q.a^s^ecimen^in^the Mus. ^Praot . Geol . Lond. 
