60 BRITISH FOSSIL CORALS 



elliptical. The septa are strongly spined, and the spines are very large, and are ornamented 

 with granules. The largest septa are exsert and largely spined, and the spines near the 

 axial space are so distinct from the septa as to simulate a columella. The first, second, 

 and third cycles of septa are nearly equal in size, and the rest are much smaller. The 

 septa of the fourth cycle are spined, and are larger than those of the fifth cycle. There 

 are a few rudimentary septa of the sixth cycle in large specimens. 



The endotheca is abundant. 



Height of the corallum 1 inch, 4,ths inch, ,|ths inch, f'gths inch. 



Breadth of calice l^ths inch, li'^th inch, f^ths inch, ^ths inch. 



Locality. Fenny Compton and Pebworth. 



In the Collection of the British iMuseum, Charles Moore, Esq., F.G.S., R. Tomes, Esq., 

 and Rev. P. B. Brodie, F.G.S. 



This beautiful Coral is readily distinguished by its peduncle, longitudinal markings, 

 many septa, and ornamented spines ; it is very variable in shape, and some very distinct 

 varieties occur, as well as deformed and monstrous shapes. 



Variety I. — With curved peduncles, elHptical calice. PI. XIV, figs. 5 and 15, 16, 17. 



Variety II. — Coral cylindro-conical, tall and compressed. PI. XIV, figs. 14, 18. 

 Height of Coral l^^ths inch. 

 Breadth of calice ^^ths inch. 

 Length of calice ^ths inch. 



Variety III. — Coral conical and wide at the calice. PI. XV, figs. 12, 13, 14. 



Variety IV. — Coral cornute, slightly curved, and the longitudinal markings very in- 

 distinct. No transverse corrugations of the epitheca. PI. XV, figs. 10, 11. 



A deformed corallum is figured in PI. XIV, fig. 10. 



The young corallites are often slightly curved, and their septa are very numerous. 

 Very probably a Coral with strong transverse markings^ but much worn, and which is 

 figured PI. XIV, fig. 11, is a variety. 



3. MoNTLiVALTiA NTJMMiFORMis, Duncan. PI. XIV, figs. 12, 13. 



The corallum is nummiform. The base is perfectly flat, and is covered with epitheca 

 strongly marked with concentric lines. 



The epitheca does not extend to the septal edges, and these project out from the peri- 

 phery of the base. 



The calice is flat, and has a central depression. 



The septa are numerous, crowded, convex externally, and less so superiorly. The 

 larger septa are spined, and the septa of the highest orders are small and rudimentary. 

 There are five cycles of septa and a part of a sixth. 



