38 - 
Orbicella altissima (Duncan), 
PI. fig. 
1867, Ke ll astra ea altis sima, Duncan, Quart. Jour, Oeol. Soo. 
London, Vol. XXIV, pp . 12, 24, PI, II, fig. 3. 
Original description: 
’’The corallum is very massive and tall, and its upper sur- 
face is subplane and wider than the base. The calices are barely 
above the common surface, they are circular, but occasionally 
deformed, and they are slightly unequal in size. The calicular 
fossa is shallow, and the calicular margins are broader than the 
septa. The columella is small, distinct, lax, and parietal. The 
costae are well marked, unequal, and rarely touch, and they are 
thicker than the septa. The costae of the highest order are 
well developed, and contrast with their rudimentary septa. The 
septa are delicate, they are thinner midway than elsewhere, and 
those which reach the columella have a paliform tooth; they are 
not exsert, and are only slightly dentate. The septa are very 
