CORALS FROM THE DEVONIAN FORMATION. 235 



7. Genus Chonophtllum, (p. Ixix). 

 Chonophyllum perfoliatum. Tab. L, fig. 5. 



Cyathophyllum plicatum, Goldfuss, Petref. Germ., vol. i, p. 59, tab. xviii, fig. 5, 1826. 



(Not tab. XV, fig. 12.) 



— — Milne Edwards, 2d edit, of Lamarck, vol. ii, p. 431, 1836. 



— PERFOLIATUM, Gold/uss, MSS. in Bonn Museum. 



Chonophyllum perfoliatum, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palaeoz., 



p. 405, 1851. 



Corallum simple, straight, rather elongate. Calice not remarkably deep, and of a 

 subcorneal form. Septa (60 to 74) equally developed, straight, and extending almost to 

 the centre of the corallum. Some vestiges of a rudimentary septal fossula are visible. 

 Height about 3 inches, diameter about 2 inches. 



Found at Torquay. (Collection of Dr. Battersby.) 



A fossil found at Wenlock, and belonging to the collection of M. D'Archiac, appears 

 to belong also to this species. 



C. perfoliatum differs from C. elongatim^ by its general form being broader and less 

 elongate, and by its tabulae being less infundibuliform. 



8. Genus Heliophyllum, (p. Ixix.) 

 Heliophyllum Halli. Tab. LI, fig. 3. 



Strombodes helianthoides, Phillips, Fig. and Descr. of Palaeoz. Foss., p. 10, pi. v, 



fig. 13a, 1841. (Not Cyathophyllum helianthoides, 

 Goldfuss.) 

 — — Hall, Geol. of New York, 4th part, p. 209, No. 48, fig. 3, 



• 1843. 



Cyathophyllum turbinatum, Ibid., No. 49, fig. 1. (Not Goldfuss.) 



— — Castlenau, Ter. sil. de I'Amer. du Nord., pi. xvi, fig. 5, 1843. 

 Heliophyllum Halli, Milne Edwards and Jules Haime, Brit. Foss. Corals, Introd., p. Ixix, 



1850. 



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



p. 408, pi. vii, fig. 6, 1851. 



Corallum simple, turbinate, or cylindro-conical, usually elongate, and shghtly curved at 

 its base, provided with an epitheca, and presenting slight circular swellings. Calice 



1 Milne Edwards and Jules Haime, Polyp. Foss. des Terr. Palaeoz., p. 406, pi. viii, fig. 1, 1851. 



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