266 BRITISH FOSSIL CORALS. 



in North America, and in Russia. In his recent work, Mr. Hall mentions its existence 

 in the lower parts of the Clinton group in Wayne county, in Niagara county, and at 

 Flamborough Head, in Canada West. 



Specimens are in the Collections of the Geological Society of London, of the Museum 

 of Paris, of M. de Verneuil, M. D'Orbigny, &c. 



M. PanderP very much resembles this species, but differs from it by its turbinate form, 

 and the rudimentary state of the tubercles on its upper surface. 



2. Monticulipora papillata. Tab. LXII, figs. 4, 4a. 



Nebulipora papillata, M'Coy, Ann. and Mag. of Nat. Hist., 2d series, vol. vi, p. 284, 1850. 



— — M'Coy, Brit. Pakeoz. Foss., p. 24, pi. i c, fig. 5, 1851. 



Ch^tetes tuberculatus, Milne Edwards and Jules Hahne, Pol. Foss. des Terr. Pakeoz. 



(Arch, da Mus., vol. v), p. 268, pi. xix, figs. 3, 3a, 1851. 

 Rhinopora tuberculosa? J. Hall, Paleont. of New York, vol. ii, p. 170, pi. 40 e, fig. 4, 



1852. 



Corallum very thin, incrustating. Tubercles much compressed, elongated in the same 

 longitudinal direction, rather prominent, about one line in length, one half more in breadth, 

 and set at a distance from each other equal to about twice their breadth ; the top of these 

 tubercles is rather compact. Calices somewhat unequal in size and in form ; those that 

 are placed on the tubercles being rather larger than the others, and about one third of a 

 line in breadth. 



Found in the upper Silurian rocks of Dudley. Professor M'Coy has met with it in 'the 

 upper Ludlow rocks of Brigster, Kendal, Westmoreland ; at Coniston, Lancashire; and at 

 Firbank, Sedbergh, Kendal. It exists also in the blue limestone of Cincinnati, Springfield, 

 and Lebanon, in Ohio. 



Specimens are in the Collections of Mr. Fletcher of Dudley, and of M. de Verneuil 

 at Paris, 



This species much resembles M. mammalata," in which, however, the tubercles are 

 more prominent, more elongated, and more irregular. Monticulipora Dalei 3 is also very 

 closely allied to the above-described species, but differs from it by its dendroidal form, and 

 its small round tubercles. 



1 Chcetetes Panderi, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Pakeoz., p. 265, 1851. 



2 Chcetetes mammulatus, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Paleeoz., p. 267, 

 pi. xix, fig. 1. 



8 Chcetetes Dalei, ibid., p. 266, p. xix, fig. 6. 



