216 BRITISH FOSSIL CORALS. 
We have, provisionally, admitted, as forming distinct species, various ramose Favosites, 
which have previously been described as such by Blainville, but which may probably, 
when better known, be found to be only varieties of the same species. Such are 
F. reticulata, F. cervicornis; and F. dubia” The latter differs, however, from the first by 
its branches not being coalescent, nor so closely set, and by the calices being rounded and 
obliquely placed on the surface of the branches. /. cervicornis has its calices more 
unequal in size, its walls thinner, and its branches larger and more irregular. All these 
have only a single line of pores on each side of the walls, and these pores are large and 
placed at a distance from each other. 
3. Favostres cervicornis. Tab. XLVIII, fig. 2. 
CALAMOPORA POLYMORPHA, var. Ramosa pivaricaTa, Goldfuss, Petref., vol. i, p. 79, 
pl. xxvii, figs. 3a, 4a, 44, 4e, 1829. (Ccet. exclus.) 
ALVEOLITES CERVICORNIS, De Blainville, Dict. Sc. Nat., vol. lx, p. 369, 1830.—Man., p. 405. 
THAMNoporRA MrLiEporacka (pars.), Steininger, Mém. Soc. Geol. de France, vol. i, p. 338, 
1831. 
CALAMOPORA POLYMORPHA, Ad. Ramer, Verst. des Harzgeb., p. 6, tab. ii, fig. xvi, 1843. 
FavosITES CRONIGERA and ALVEOLITES CELLEPORATUS, D’ Orbigny, Prodr. de Paléont., vol. i, 
p- 107, 1850. 
= = De Verneuil and Jules Haime, Bull. Soc. Géol. de France, 2d ser., 
vol. vil, p. 102, 1850. 
— CERVICORNIS, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palzeoz., 
p. 243, 1851. 
— poLyMorPHA, M‘Coy, Brit. Palzeoz. Foss., p. 68, 1851. 
Corallum subdendroid. Calices unequal in size ; walls somewhat thick. 
Found at Torquay, and, according to Professor M‘Coy, at Newton Bushel, Teignmouth, 
New Quay, Plymouth, and Bedruthen Slope, St. Eual; at Mons in Belgium ; near Brest 
in France ; at Ferrones and Consejo de Llaviera in Spain ; and in the Eifel, at Heiflerstein, 
Villmar, and Bensberg, in Germany. 
This coral differs from F. reticulata’ and F. dubia* by its branches being thicker and 
more irregular, its calices beimg more unequal in size, and its walls being thinner. 
4, FAVOSITES DUBIA. 
CALAMOPORA POLYMORPHA, var. GRACILIS, Goldfuss, Petref. Germ., vol. 1, p. 79, tab. xxvii, 
fig. 5, 1829. 
ALVEOLITES DUBIA, Blainville, Dict., vol. Ix, p. 370, 1830.—Man., p. 405. 
THAMNOPORA MADREPORACEA, Steininger, Mem. de la Soc. Géol., vol. i, p. 338, 1831. 
' Tab. xlviii, fig. 2. 
2 Calamopora polymorpha, var. gracilis, Goldfuss, Petref. Germ., t. i, p. 19, tab. xxvii, fig. 5, 1829. 
3 Tab. xlviii, fig. 1.- 
* Calamopora polymorpha, var. gracilis, Goldfuss, Petref. Germ., t. i, p. 19, tab. xxvii, fig. 5, 1829. 
