CORALS FROM THE MOUNTAIN LIMESTONE. 153 



Family FAVOSITLDvE, (p. Ix.) 

 Sub-Family Favositin^e, (p. Ix.) 

 1. Genus Favosites, (p. Ix.) 

 1. Favosites parasitica. Tab. XLV, fig. 2. 



Calamopora parasitica, John Phillips, Geol. of York., vol. ii, p. 201, pi. i, figs. 61 and 



62, 1836. 

 Favosites parasitica, M'Coij, Syn. Carb. Foss. of Ireland, p. 192, 1844. 

 — — WOrhiyny, Prod, de Palseont., vol. i, p. 160, 1850. 



— Milne Edwards and J. Haime, Pol. Foss. des Terr. Pal., p. 244, 185 1 . 



Corallum forming small globular masses, and usually adhering to the stem of an 

 Encrinite. Walls very thin. Calices unequal in size ; some very small ones near the 

 angles of the larger ones ; the latter 1 or 1^ line in diameter. 



Fossil from the Carboniferous Limestone at Borland, in Yorkshire ; and according to 

 Professor M'Coy, in Ireland. 



The fossil designated by Colonel Portlock 1 and by Professor M'Coy, 2 under the name 

 of Favosites Gothlandica, appears to belong to this species. The specimens mentioned by 

 the first of these geologists were found in Tyrone and Derryloran ; those described by the 

 latter were met with in the Isle of Man, and in Derbyshire. A collector of the Museum 

 of Paris, M. Marcou, found at Button Mould Knobs, near Louisville, in North America, a 

 Coral, which we equally refer to the above-described species, although its calices are 

 somewhat smaller. 



The genus Favosites, which is so abundant in the fauna of the Silurian and 

 Devonian Periods, appears to be represented only by the F. parasitica in the Carboni- 

 ferous Formation ; and the other fossils that various authors have described under this 

 generic name, or as Calamopora, are now referred to different genera. We must, however, 

 not omit mentioning here two Corals that are not sufficiently well known to be classed 

 zoologically, although they probably are not true Favosites. 



One of these fossils is the Calamopora incrustans of Professor Phillips. 3 It was found 

 in the Carboniferous Limestone at Bolland, and is known to us only by a very rough 

 figure, given by that distinguished geologist. 



The other is the Calamopora dentifera of the same author; 4 it was met with at 

 Bolland, but in the present state of Palasontological science cannot be characterised. 



1 Report on the Geology of Londonderry, &c., p. 326. 2 Syn. Carb. Foss. of Ireland, p. 192. 



3 Geology of Yorkshire, vol. ii, p. 200, tab. i, figs. 63, 64 ; Favosites incrustans, D'Orbigny, Prodr., 

 vol. i, p. 160 ; Milne Edwards and Jules Haime, Polyp. Palseoz., p. 246. 



* Geology of Yorkshire, vol. ii, p. 201, tab. i, figs. 58, 60 ; Favosites dentifera, D'Orbigny, op. cit., 

 p. 160 ; Milne Edwards and Jules Haime, loc. cit. 



