0 » c 
-44- 
sllulosa 
Orbicella cellulosa var, curvata (Dunoon) , 
PI* figs, 
X8S3, Aatraea cellulosa var. curvata , Duncan, Quart. Jour. Geol. 
Soc, London, Vol. XIX, p. 418, 
Original description: 
"Corallites slender, long, 0I039, sometimes compressed; 
circular in transverse section, except when compressed. Walls 
thin and delicate. Costae delicate, unequal, narrow at the 
base, tapering externally# Septa well developed, in six systems 
of four complete cycles. The primary septa are large, toothed on 
either side, not larger at any one point than at another. The 
secondary septa are smaller than the primary, and have a tooth 
near the columella. The tertiary are smaller than the secondary, 
vary much in size, often extend nearly up to the columella, and 
curve there towards the latter; they have lateral teeth, and a 
larger tooth at the end; or they reach only halfway, being either 
