TERTIARY CORALS. 45 
There are six systems of septa, and four complete cycles; moreover, in the largest 
corallites there are many rudimentary septa of the fifth cycle. The septa are unequal 
in the sectional view; often larger (the primary) at the inner end than midway; and may 
extend across the columellary space. A little below the calice the wall is very thick, and 
the endotheca is most abundant and very inclined. ‘The coste exist above the level of 
the common ccenenchyma; they are alternately large and small, but always short, ill 
developed, and faintly dentate. 
The exotheca is greatly developed ; its cells are irregular in shape, not elongate, but 
more or less square in outline ; it covers up the corallites, leaving them free to a small 
extent only. The upper surface of this exothecal ccenenchyma is faintly granular. 
Height of corallum 1 inch. Great diameter of calices 3th to 4th inch. 
Locality.—Brockenhurst. In the collection of Frederick Edwards, Esq., F.G.S. 
6. SoLENASTR#A GRANULATA, Duncan. Plate VI, figs. 14—18. 
The corallum is short, and its upper surface presents much granular coenenchyma’ 
between the calicular ends of the corallites. The corallites are small and distant ; and 
in well-preserved specimens are seen to project somewhat above the common exothecal 
coenenchyma, but in worn fossils they are but slightly elevated, and present a very thick 
wall. ‘he calice is circular in outline, its fossa is shallow, its margin is thin; and the 
columella is rudimentary. 
There are six systems of septa and four cycles of them; they are unequal, the 
primary being much the largest,’ and all except those of the fourth and fifth orders have 
a paliform elevation near the columellary space. 
The septa are rugged laterally, from their connection with much endotheca, which is 
highly inclined. 
The cost are seen above the surface of the, ccenenchyma as short ridges alternately 
large and small, and they appear to emerge into the large granules on the free surface of 
the coenenchyma ; where the corallites are not covered by exotheca below the free surface, 
the costz are also visible. 
The exotheca is cellular and banded.* The occurrence of the bands admits of much 
corallite wall being costulated. 
The free surface of the exotheca is dense and covered with large granules. 
Height of corallum } inch. Diameter of calices 3th inch. 
Locality—Brockenhurst and Roydon. In the collection of Frederick Edwards, Esq., 
F.G.S., and in the Museum of Practical Geology, London. 
All these species present the most important generic characteristic of the Solenastree, 
and they are all very closely allied. The principal specific distinctions are in the amount 
1 Plate VI, fig. 9. * Plate VI, fig. 14. 3 Plate VI, fig. 17. 
4 Plate VI, figs. 15, 16. 
