CORALS FROM THE SILURIAN FORMATION. 257 



portion of the wall two longitudinal series, which alternate. Breadth of the calices 

 somewhat more than 1 line. 



Found in the Caradoc sandstone at Cuttimore's Quarry near Tortworth ; and in the 

 upper Silurian deposits at Wenlock, and Dinas Court near Aymestry. Professor M'Coy 

 mentions its existence at Dudley; Golugoed, Mendinam, in Caermarthenshire ; Ledbury, 

 in Herefordshire ; Old Radnor, Presteigne, in Radnorshire. It has also been met with in 

 Groningen, Gothland, Russia, and North America. Mr. Hall has recently mentioned its 

 existence in the Niagara limestone, at Niagara Falls, Lockport, Rochester and Milwaukie, 

 Wisconsin, and in the coralline limestone at Schoharie. 



This fossil has, till of late, been confounded with Favosites Goldfussi} in which the 

 mural pores are more closely set, and are sometimes opposite, but at other times alternate, 

 in the adjoining series. 



2. Favosites aspera. Tab. LX, figs. 3, 2>a. 



Calamopora alveolaris (pars), Goldfuss, Petref., vol. i, p. 77, tab. xxvi, fig. 15 (cset. excl.), 



1829. 

 — — Morren, Descr. Corall. in Belg. Repert., p. 72, 1832. 



Favosites alveolaris, Lonsdale, in Murchison, Silur. Syst., p. 681, pi. xv bis, fig. 2, and 



perhaps also the fig. 1, 1839. 

 Calamopora alveolaris, Ed. Eichwald, Sil. Schist. Syst. in Esthland, p. 198, 1840. 

 Favosites alveolaris, Lonsdale, in Murch., Vern. and Keys. Russia and Ural, vol. i, 



p. 610, 1845. 

 Calamopora alveolaris, Keyserling, Reise in Petschora, p. 1/7, 1846. 

 Favosites aspera, TfOrbigny, Prodr. de Paleont., vol. i, p. 49, 1850. 



— — 1 M'Coy, Brit. Palseoz. Foss., p. 20, 1851. 



— — Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palseoz. (Arch, du 



Mus., vol. v), p. 234, 1851. 



Corallum massive, with an almost flat surface ; calices unequal in size. Tabulae 

 presenting six large, and well-marked submarginal fossulse. Mural pores rather closely 

 set, and placed at the angles of the visceral chamber. Diagonal of the large calices 

 somewhat more than 1 line. 



Found in the Caradoc sandstone at Powis Castle, Cefn-y-garrey, Llandovery; in 

 Wenlock limestone, at Leinthall Earls near Ludlow. According to Mr. Lonsdale, in 

 the middle and lower Ludlow rocks, at Mocktree Hill, Aymestry, and Tatton Edge ; and 

 in the Wenlock limestone, at Purlieux, Malvern, Haven near Aymestry, Hurst Hill near 

 Sedgley, the western side of the Malvern Hills, Abberley, Little Ridge, Easthop, Winslow 

 Mill, Townhope, Westhope, and Woolhope. Professor M'Coy has found it at Ardaun, 

 and Cappacorcogne, Cong, in the county of Galway • Foylathurrig, Dingle, in the county 



1 See tab. xlvii, fig. 3 



