CORALS FROM THE DEVONIAN FORMATION. 229 



Cyathophyllum hexagonum, Morren, Descr. Corall. in Belg. Repert., p. 57, 1832. 



— — Milne Edwards, 2d edit, of Lamarck, vol. ii, p. 429, 1836. 



AsTREA ANANAS, Ad. Rcemer, Verst. der Harzegeb., p. 5, tab. ii, fig. 11, 1843. 

 Cyathophyllum hexagonum, Milne Edwards and Jules Haime, Pol. Fos. desTerr. Palaeoz., 



p. 382, 1851. 



Corallum composite, astreiforni ; gemmation calicular and extracalicular. Calices 

 polygonal, varying much in size, rather deep, and circumscribed by walls that are not very 

 prominent, but quite distinct ; thin, and always simple. Forty-six septa, alternately large 

 and small, the twenty-three latter not extending far from the wall ; the large ones thin, 

 terminated by a denticulate edge, which is horizontal near the margin, but very strongly 

 arched upwards and inwards, and presenting near the centre of the visceral chamber 

 a small paliform lobe ; these lobes form a very distinct crown round the centre of the 

 calice. Height of the corallum about 2\ inches, depth about 2 lines, and diameter of the 

 circle of paliform lobes somewhat more than 1 line. 



Found at Torquay; at Montignies, St. Christophe, and Chimay in Belgium; at 

 Bensberg, Refrath, and Grund in Germany. 



British specimen in Dr. Battersby's collection. 



This species differs from C. qiiadrigeminum^ by its calices being larger and shallower, 

 and by the paliform lobes of the septa ; it differs from C. caspitomm" by these lobes 

 being larger than in the latter and the septa more equally developed. In C. holoniense' 

 the calices are larger, the septa less prominent and more developed, and the paliform lobes 

 are quite rudimentary. In C. marmini^ the calices are deep and the septa rather unequal. 

 In C. Sedgwiclcr' the septa are less numerous than in the above-described species, and 

 become thicker towards three fourths of their breadth. 



10. Cyathophyllum c^spitosum. Tab. LI, figs. 2, 2a, 2/5. 



Cyathophyllum c.5;spitosum, Golfuss, Petref. Germ., vol. i, p. 60, tab. xix, fig. 2, 1826. 



— HEXAGONUM (pars.). Ibid., tab. xix, fig. 5ff, b, c. (Coet. excl.) 

 Caryophyllia dubia, Be Blainville, Diet. So. Nat., vol. Ix, p. 311, 1830. — Man., p. 345. 

 Cyathophyllum c^espitosum, Milne Edwards, 2d edit, of Lamarck, vol. ii, p. 428, 1836. 



— — Lonsdale, Geol. Trans., 2d ser., vol. v, 3d part, pi. Iviii, 



fig. 8, 1840. 



— — Phillips, Palaeoz. Foss., p. 9, pi. 3, fig. 10, 1841. 

 Cladocora Goldfussi, Geinitz, Grundr. der Verst., p. 569, 1845-46. 

 Diphyphyllum cyESPiTOSUM, UOrbigmj, Prod, de Palcont., vol. i, p. 106, 1850. 

 Cyathophyllum — Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palaeoz., 



p. 384, 1851. 



— — M'Coy, British Palseoz. Foss., p. 69, 1851. 



1 Goldfuss, Petref. Germ., t. i, p. 59, tab. xix, figs. 1, 5/, and tab. xviii, fig. 6, 1826. 

 Tab. Ii, fig. 2. « Tab. lii, fig. 1. * Tab. lii, fig. 4. ^ Tab. lii, fig. 3. 



