CORALS FROM THE LOWER CHALK. 55 
the fifth order being rather longer than those of the fourth order. The septa of the fifth 
cyclum are small, thin, low, and unite to the neighbouring principal septa; those of the 
sixth order join the primary ones; those of the seventh order adhere by their inner and 
upper edge to the secondary ones, and those of the eighth and ninth orders to the tertiary 
septa; or, in other words, each element of this fifth cyclum joins the eldest of the two 
septa between which it is placed. Independently of these junctions, which are normal, and 
always take place along the mner edge of the septa, the interseptal loculi are irregularly 
divided in some places by the projecting lateral granule of two neighbouring septa 
meeting, and becoming cemented together. By this character, as well as by its general 
form, this species tends to unite the family of Eupsammide with the Fungide. 
Height of the corallum, one and a half or two lines; diameter, three or four lines. 
Some specimens, which were probably not adult, were only two lines and a half in 
diameter. 
This delicate little Coral differs from Stephanophyllia elegans, S. imperialis, and 
8. discoides' by the form of the septa, which do not appear to be angular and lacerated, 
as in the three latter species. Stephanophyllia astreata’ differs from it by having a large 
fossula and a well-developed columella. It most resembles S. swecica ;* but in this species 
the two tertiary septa of each system unite below the columella and the secondary septa, 
which consequently do not extend to the centre of the calice; whereas in S. Bowerbanku 
these tertiary septa, as we have already stated, adhere to the secondary septa, and these 
last-mentioned septa extend to the columella. The Fossil Coral figured by M. von 
Hagenow, under the name of Fungia clathrata,* and found by that geologist in the chalk 
formation of Rugen, is evidently very nearly allied to the British species here described ; 
but as far as we can judge of it by M. von Hagenow’s engraving, it appears to differ from 
it by its more elevated form, by the strongly-marked concentric stri visible on the mural 
disc, and by its basis beg more prominent. 
We must also remark, that the section of the genus Stephanophyllia, to which this 
species belongs, and to which we applied the name of Lenticular Stephanophyllia,’ has of 
1 See our Monograph of the Eupsammide, Ann. des Sc. Nat., 3° serie, vol. x. 
2 Fungia astreata, Goldfuss, Petref. Germ., vol. i, p. 47, tab. xiv, fig. 1 (where it is by mistake 
designated under the name of Fungia radiata). This species not having been, as yet, well characterised, 
we think it may be useful to give a short description of it here. Corallum simple, very short, and having 
the form of a plano-convex lens. Calicular fossula circular, and well developed. Costa very delicate 
and not closely set. Septa forming five complete cycla, and appearing to be thin and strongly granulated. 
Size very variable ; in the adult, diameter three lines, height about one line. Fossil found at Aix-la-Chapelle, 
in Westphalia, and existing in the Museums of Bonn and Paris. All the specimens yet found are in a yery 
bad state of preservation. 
3 Monogr. of the Eupsammide, loc. cit., p. 94. 
4 In Leonhard and Bronn’s Jahrbuch fiir Mineralogie, 1840, p. 684, tab. ix, fig. 3. 
5 Monogr. of the Eupsammidee, loc. cit., p. 94, 1848. 
