210 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. diibia? The latter differs, however, from the first by 

 its branches not being coalescent, nor so closely set, and by the cahces being rounded and 

 obhquely placed on the surface of the branches. F. cervicornis has its caUces more 

 imequal 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. Favosites cervicornis. Tab. XL VIII, fig. 2. 



Calamopoka polymorpha, var. Ramosa divaricata, Goldfuss, Petref., vol. i, p. 79, 



pi. xxvii, figs. '6a, 4a, 46, 4c, 1829. (Coet. exclus.) 

 Alveolites cervicornis, De Blainville, Diet. Sc. Nat., vol. Ix, p. 369, 1830. — Man., p. 405. 

 Thamnopora Milleporacea (pars.), Steininger, Mem. See. Geol. de France, vol. i, p. 338, 



1831. 

 Calamopora polymorpha. Ad. Rcemer, Verst. des Harzgeb., p. 6, tab. ii, fig. xvi, 1843. 

 Favosites cronigera and Alveolites celleporatus, B'Orbigny, Prodr. de Paleont., vol. i, 



p. 107, 1850. 



— — Be Verneuil and Jules Haime, Bull. Soc. Geol. de France, 2d ser., 



vol. vii, p. 102, 1850. 



— cervicornis, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palaeoz., 



p. 243, 1851. 



— polymorpha, M'Coy, Brit. Palaeoz. 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 difiers from F. reticulated and F. dubia* by its branches being thicker and 

 more irregular, its calices being more unequal in size, and its walls being thinner. 



» 



4. Favosites dubia. 



Calamopora polymorpha, var. gracilis, Goldfuss, Petref. Germ., vol. i, p. 79, tab. xxvii, 



fig. 5, 1829. 

 Alveolites dubia, Blainville, Diet., vol. Ix, p. 370, 1830. — Man., p. 405. 

 Thamnopora madreporacea, Steininger, Mem. de la Soc. G^ol., vol. i, p. 338, 1831. 



' Tab. xlviii, fig. 2. 



- Calamopora polymorpha, \ar. gracilis, Goldfuss, Petref. Germ., t. i, p. 19, tab. xxvii, fig. 5, 1829. 



■* Tab. xlviii, fig. 1. 



* Calamopora polymorpha, var. gracilis, Goldfuss, Petref. Germ., t. i, p. 19, tab. xxvii, fig. 5, 1829. 



