CORALS FROM THE SILURIAN FORMATION. 271 



Catenipora labyrinthica, Morren, Descr. Cor. Belg., p. 68, 1832. 



— — St. Kutorga, Beitr. zur Geogn. und Paleont., Dorpat's, p. 23, 



tab. v, fig. 1, 1835. 

 Halysites labyrinthica, Bronn, Leth. Geogu., vol. i, p. 52, tab. v, fig. 8, 1835. 

 Catenipora labyrintiiica, Milne Edwards, in Lamk., 2d edit., vol. ii, p. 322, 1836. 

 Halysites labyrinthica, Fischer, Oryct. de Moscou, 2d edit., p. 163, pi. xxxviii, figs. 1, 



2, 4, 1S37. 

 Catenipora labyrinthica, Hisinger, Leth. Suec, p. 95, tab. xxvi, fig. 10, 1837. 



— escharoides, Lonsdale, in Murclrison, Silur. Syst., p. 685, pi. xv bis, fig. 14, 



1839. 



— labyrinthica, Eichwald, Sil. Syst. in Esthland, p. 199, 1840. 



— escharoides, Hall, Geol. of New York, 4th part, No. 22, fig. 1, 1843. 



— agglomerata, Ibid., No. 22, fig. 2. 



— labyrinthica, Castelnau, Terr. Sil. de l'Amer. Sept., p. 45, pi. xvii, fig. 1, 



1843. 



— Michelini, Ibid., p. 45, pi. xvii, fig. 2. 



— escharoides, Portlock, Rep. on the Geol. of Londonderry, &c., p. 325, pi. xx, 



fig. 9, 1843. 



— — Bale Owen, Rep. on Geol. of Iowa, &c., p. 33, pi. vii, fig. 2, 1844. 

 Halysites labyrinthica, Keyserling, Reise in Petsehora, p. 175, 1846. 



Catenipora gracilis, Milne Edwards and Jules Haime, Atlas du Regne Anim. de Cuvier 

 (Zooph.), pi. lxv bis, fig. 2, 1849. 



— compressa, Ibid., pi, lxv bis, fig. 3. 



Halysites labyrinthica, B'Orbigny, Prodr. de Paleont., vol. i, p. 50, 1850. 



— agglomerata, Ibid., p. 50. 



— catenularia, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palseoz. 



(Arch, du Mus., vol. v), p. 281, 1851. 



— catenulatus (pars), M'Coy, Brit. Palseoz. Foss., p. 26, 1851. 



Catenipora escharoides, J. Hall, Paleont. of New York, vol. ii, pp. 44 and 127, pi. xviii, 



fig. 2, and pi. xxxv, fig. 1, 1852. 

 — agglomerata? Ibid., p. 129, pi. xxxv bis, fig. 2. 



Corallum very tall, forming a loose convex mass, composed of large vertical plates, that 

 are themselves made up with single series of tubular corallites united laterally. These 

 plates meet so as to form various angles, and to constitute, at the surface of the mass, large 

 irregular reticulations ; the divisions of which are much larger in one direction than in 

 the other. The sides of the reticulations are composed of a series of corallites, varying in 

 number from three to eight. Calices elliptical, and of the same size in the same specimen, 

 but varying very much in different specimens (their great diameter varying from almost 

 half a line to above 1^ line). Walls strong, and covered with a thick epitheca, Septa 

 trabicular (12), reaching almost to the centre of the visceral chamber. Tabulae well 

 developed, horizontal, and closely set. 



Llandeilo flags : Robeston Walshen, Pembrokeshire. Sholeshook, Pembrokeshire 

 (Murchison). 



Caradoc sandstone: Hughley, Salop, Lickey (Murchison). 



