154 BRITISH FOSSIL CORALS. 



2. Genus Michelinia, (p. lx.) 

 1. Michelinia favosa. Tab. XLIV, figs. 2, 2a, 25, 2c. 



Honey comb, Parkinson, Org. Rem. of a Former World, vol. ii, p. 39, pi. v, fig. 9, 1808. 



Manon favosum, Goldfuss, Petref. Germ., vol. i, p. 4, tab. i, fig. 11, 1826. 



Porites cellulosa, Fleming, Brit. Anim., p. 511, 1828. 



Favastrea minon, Blainville, Diet. Sc. Nat., vol. lx, p. 340, 1830 ; Man., p. 375. 



Porites cellulosa, S. Woodward, Syn. Table of Brit. Org. Remains, p. 6, 1830. 



Michelinia favosa, De Koninck, An. Foss. des Terr. Carb. de Belg., p. 30, pi. c, fig. 2, 



1842. 

 Columnaria senilis, ib., p. 25, pi. b, fig. 9. Specimen in a bad state of preservation. 

 Favosites alveolata, Geinitz, Grund. der Verst., p. 572, 1845-46. 

 MiCHELrNiA favosa, Michelin, Icon. Zoopb., p. 254, pi. lix, fig. 2, 1846. 

 Michelinia favosa and Favastrea senilis, D'Orbigny, Prod., vol. i, p. 160, 1850. 

 Michelinia favosa, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palaeoz., 

 p. 249, 1851. 



Corallum massive, generally circular ; upper surface slightly convex ; common basal 

 plate covered with a thick epitheca, that sends off numerous and well-developed radiciform 

 processes. Calices somewhat unequal, shallow, and presenting, in well-preserved specimens, 

 margins thickened by small endothecal vesicles. When these vesicles are destroyed near 

 the upper edge of the wall, thirty or forty somewhat unequal small septal striae become 

 visible, and the wall shows small horizontal series of pores. Diagonal of the calices three 

 or four lines. 



Found at Masbury, near Mendip, Somersetshire, and in Derbyshire ; at Hook Point, 

 Wexford, and in Enniskillen. The same species has been found at Tournay and Vise in 

 Belgium, and at Ratingen, in Prussia ; but it is erroneously that Goldfuss states that it is 

 also met with in the Eifel. Specimens of this Coral are in the Collections of the Geological 

 Society of London, of the Bristol Museum, of J. S. Bowerbank, Esq., &c. 



Michelinia favosa diners from M. antiaua (see p. 156) and M. concinna 1 by the 

 irregular form and vesicular structure of its endotheca. The aspect of its upper surface, 

 due to the unequal development of the calices, distinguishes it from M. geometrical 

 and the radiciform processes of its under surface distinguishes it from M. convexa, 5 

 M. tenuisepta? and M. megastoma. 5 



1 Lonsdale, in Geol. of Russia, by Murcbison, Verneuil, and Keyserling, vol. ii, p. 611, pi. a, fig. 3. 



2 Milne Edwards and Jules Haime, Polyp. Palseoz., tab. xvii, fig. 15. 



3 Op. cit., tab. xvi, fig. 1. 4 See tab. xliv, fig. 1. 6 See tab. xliv, fig. 3. 



