104 BRITISH POSSIL CORALS. 



form, its costulac, the mode of arrangement of its superficial calices, its papillose columella, 

 and the complete absence of intercalicular ridges. 



Some other fossil corals are mentioned by geologists as having been met with in the 

 Coral Rag of England, but we have not been enabled to ascertain the character of these 

 species, and can at present only recall what our predecessors have said concerning them, 

 without pretending to distinguish them from those described in this chapter. 



1. AsTREA iN^auALis, PhilHps, Geol. of Yorkshire, vol. i, p. 126. (This fossil was found 



at Malton, and has been only characterised by the very 

 unequal size of its cells.) 



2. AsTREA, with cells circumscribed, Phillips, op. cit., Malton. 



3. TuRBiNOLiA DiDYMA, Morris, Cat. of Brit. Fossils, p. 46. Steeple Ashton. (Referred by 



that author to the T. didyma of Goldfuss, a species which has 

 as yet been found only in cretaceous formations.) 



4. Isis, Miss Bennet. (Fossil from Steeple Ashton and Bradford; no description given.) 



CHAPTER X. 

 CORALS FROM THE GREAT OOLITE. 



The Corals from the Great Oolite of England, which have been submitted to our 

 investigations, belong to twenty-two distinct species, and, as well as those met with in the 

 upper deposits of the same geological group, are for the most part Astreidce; together with 

 eighteen species belonging to this family, we have only seen two species of Fungidcp, and 

 two of Poritida. 



Three of these fossils {Cladophyllia Babeana, Stylina solida, and Anahacia orbuUtes), 

 are found in the Inferior Oolite as well as in the Great Oolite; one {Thamnastrea concinnct) 

 appears to exist in both of these formations as well as in the Coral Rag, and six species 

 have been met with in the Great Oolite in France as well as in England ; but the British 

 pala3ontological Fauna of this period presents sixteen species that have not as yet been 

 discovered on the Continent. 



The principal localities at which the species here described were found are the environs 

 of Bath, Minchinhampton, Bradford, and Stonesfield. 



