CORALS FROM THE MOUNTAIN LIMESTONE. 159 



Corallum constituting a tall pyriform mass, the upper surface of which is very convex, 

 with polygonal calices and simple well-developed walls. The calices are somewhat unequal 

 in size and in form, being sometimes rather triangular, tetragonal, or hexagonal. The 

 corattites are very long, and radiate from the basis of the corallum to the top. The walls 

 are not perforated. Tabula horizontal, and placed at about one sixth of a line distance. 



This fossil has been met with at Hilsington Barrow, near Kendal, and in various 

 localities in Russia. The only British specimen which we have seen belongs to the 

 Museum of the Geological Society of London, and is not in a state of preservation 

 sufficiently good to render it worth being figured in this Monograph. 



C. radians differs from most of the other species belonging to the same genus by its 

 massive, convex form, and apparently also by the absence of mamillse on its surface. 

 The same characters are met with only in C. crinifus 1 and C. Tric/eri, 2 but the first of 

 these corals differs from the species above described by the existence of superposed layers, 

 and the second by its large calices and slender walls. 



2. Ch^etetes tumidus. Tab. XLV, figs. 3, 3a, 3b. 



Calamopora tumida, Phillips, Geol. of Yorkshire, 2d part, p. 200, pi. i, figs. 49 — 57, 1836. 

 Favosites scabra, or Calamopoka fibrosa, Be Koninck, An. Foss. des Terr. Carb. de 



Belgique, p. 9, pi. B, figs. 1, 5, 1842. 



Worn specimen. 

 Calamopora inflata, ibid., p. 10, pi. a, fig. 8. 

 Alveolites irregularis, ibid., p. 11, pi. b, fig. 2. 

 Favosites tumida, Portlock, Rep. Geol. on Londonderry, p. 326, pi. xxii, fig. 4, 1843. 



— M'Coy, Syn. Carb. Foss. of Ireland, p. 193, 1844. 



Alveolites tumida, scabra and irregularis, Michelin, Icon. Zooph., p. 259, 260, pi. lx, 



figs. 2, 3, 4, 1846. 

 Favosites inflata, M'Coy, Ann. and Mag. of Hist., 2d Ser., vol. iii, p. 134, 1849. 

 Favosites tumida, Ch^etetes Koninckii, Ceriopora irregularis, tumida and inflata, 



B'Orbiyny, Prodr. de Pal., Vol. i, p. 160, 161, 1850. 

 Ch.etetes tumidus, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palaeoz., p. 270, 



1851. 

 Stenopora inflata and tumida, M'Coy, Brit. Palseoz. Fos., p. 82, 1851. 



Corallum forming cylindrical branches of various sizes. Calices unequally developed, 

 with rather thick margins. In general eight calices occupy the space of about one line, 

 but on the slightly projecting gibbosities of the surface of the corallum the calices are 

 somewhat larger, and almost circular. 



This fossil has been found at Harrovvgate, Greenhow Hill, Brough, Kirby Lonsdale ; 



1 Stenopora crinita, Lonsdale, in Strzelecki, New South Wales and VanDieman's Island, tab. via, fig. 5. 



2 Milne Edwards and Jules Haime, Polyp. Palseoz., p. 269, tab. xvii, fig. 6. 



