24 BRITISH FOSSIL CORALS 
Famity—FUNGIDA. 
Sub-Family—Funcinz. 
Genus—MIcRABACIA. 
There are specimens of a small form of A/tcrabacia coronula, Goldf., sp., and of a large 
variety, in the Red Rock (pl. 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 J/. 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 genus had a very short vertical range, and 
was represented in later times by the Stephanophyllie. 
Sus-Famity—LOPHOSERIN &. 
Genus—CYCLOLITES. 
This genus almost characterises the geological horizon of the Craie tuffeau; Gosau, 
Tle d’Aix, les Martigues, Vaucluse, Corbicres, Uchaux, &., having deposits in which 
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. 
CYCLOLITES POLYMORPHA, 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, F.G.S. 
