24 BRITISH FOSSIL CORALS 



Family— FUNGID^. 



Suh-Family — Fungin^. 

 Genm — Miorabacia. 



There are specimens of a small form of Micrabacia coronula, Goldf., sp., and of a large 

 variety, in the Red Rock (pi. IX, fig. 1). The species is well known in the Upper Greensand 

 of England and in the Chalk of Essen. There is another species, which is hardly dis- 

 tinguishable from M. coronula in the Neocomian of Caussols (Var.). 



The variety of the species found in the Red Rock rather resembles the Neocomian 

 species in its diameter and flatness. The geniis had a very short vertical range, and 

 was represented in later times by the Stejjhunojjliyllice. 



Sub-Family— LOPIiOSERIN^. 



Genus — Cyclolites. 



This genus almost characterises the geological horizon of the Craie tuffeau ; Gosau, 

 He d'Aix, les Martigues, Vaucluse, Corbieres, Uchaux, &c., having deposits in whicli 

 numerous species have been found. A few species are found in the White Chalk, and in 

 the Eocene and Miocene deposits. There are some doubtful Neocomian species, and the 

 genus is extinct. 



Cn'LOLiTKs POLYMORPnA, Goldfuss, sp. PL IX, fig. 18. 



The corallum is very irregular in shape, generally sub-elliptical, and not very tall. 



The highest point of the calice is not central, and the central fossula is very variable 

 in its place. 



The septa are very numerous, thin, close, flexuous, crenulate, and occur in series of 

 fours. 



The solitary specimen of this form is small, but the fossula and the septa are tolerably 

 distinct. 



Locality. Hunstanton. In the Collection of the Rev. T. Wiltshire, E.G. S. 



