Ix BRITISH FOSSIL CORALS. 



Family IX. 

 FAVOSITIDtE. 



Corallum essentially formed by lamellar walls, with little or no coenenchyma. Visceral 

 chambers divided by numerous and well-developed complete tabulge. 



First Tribe— FAVOSITID^E. 

 Corallum massive. Walls perforated. Septa rudimentary. No coenenchyma. 



1. Genus Favosites. 



Lamarck, Hist, des An. sans Vert., vol. ii, p. 204, 1816; Calamopora, Goldfuss, Petref. Germ., 



vol. i, p. 77, 1826-30. 



Corallum composed of basaltiform corallites, and having a basal plate covered with an 

 epitheca, and no radiciform appendices. Calices at right angle with the axis of the corallite, 

 and in general hexagonal. Walls perforated in a very regular manner. Tabula horizontal, 

 and very regularly superposed. No coenenchyma. 



Typ. sp., Favosites Gothlandica, Lamarck, loc. cit., p. 206. 



2. Genus Michelinia. 



De Koninck, Descr. des Anim. foss. des Terr, houilliers de la Belgique, p. 30, 1842-44. 



Corallum having a basal plate with radiciform prolongations. Tabula very irregular, 

 and subvesicular. The other characters as in Favosites. 



Typ. sp., Michelinia tenuisepta, De Koninck, loc. cit., pi. c, fig. 3 a, b. 



3. Genus Kcninckia. 



Milne Edw. and J. Hahne, Comptes rend., t. xxix, p. 260, 1849. 



Corallum resembling Favosites, but having the walls larger and less regular, and the 

 septa constituted by series of distinct and spiniform processes, interrupted at certain 

 distances by the tabulae, which are horizontal. 



Typ. sp., Koninckia fragilis, Milne Edw. and J. Haime, loc. cit. 



4. Genus Alveolites. 



(Pars) Lamarck, Syst. des An. sans Vert., p. 375, 1801 ; Steininger, Mem. Soc. Geol. France, vol. i. 

 Corallum composed of superposed strata of corallites very similar to those of Favosites, 



