186 BRITISH FOSSIL CORALS. 
its septa being more numerous and flexuous inwardly, and from C. Bowerbanki,’ by the 
irregular arrangement of the sepfa near the columellarian protuberance. C. Keyserlingi” 
is more bent, has larger accretion ridges, the interseptal loculi more yesicular, and the 
septa being less numerous. 
3. CLisiopHyLLuM Bowersankr. Tab. XXXVIL, figs. 4, 4a. 
CLIsIopHYLLUM BowerBaNkI, Milne Edwards and Jules Haime, Pol. Foss. des Terr. 
Paleoz., p. 411, 1851. 
Corallum conical, elongate, curved, very narrow at its basis, and presenting but very 
slight circular accretion swellings. Ca/ice circular. Sepfa 70, or more; the principal 
ones rising up towards the centre of the corallum, where they become flexuous; eight of 
them larger than the rest, and reaching to the top of the columellarian protuberance. 
Height of the corallum about 23 inches; diameter of the calice about 12 or 14 lunes. 
The specimen here described was found in the Carboniferous Deposits of Ireland, and 
belongs to the collection of our friend, Mr. J. 8. Bowerbank. 
This species is characterised principally by the unequal development of its principal 
septa, eight of which only extend to the top of the columellarian protuberance. It most 
resembles C. coniseptum,’ but independently of its being much shorter, it differs from this 
Coral by its septa being much more numerous in proportion to the size of the visceral 
chamber. 
CLIsIopHYLLUM BrPARTITUM of Professor M‘Coy,* much resembles this species, but 
appears to differ somewhat from it by the mode of arrangement of the principal septa. It 
was found in Derbyshire. 
4, CLislopHYLLUM KnysERLINGt. 
CLisIopHyLLUM Keryseruinet, M*‘Coy, Ann. and Mag. of Nat. Hist., 2d series, vol. iii, p. 2, 
1849. 
= -- Milne Edwards and Jules Haime, Pol. Foss. des Terr. 
Paleeoz., p. 412, 1851. 
— M<Coy, Brit. Palzeoz. Foss., p. 94, pl. ili c, fig. 4, 1851. 
Corallum conical, and very elongate; curved, and presenting rather strong circular 
swellings. Calice circular. Columellarian protuberance conical, and formed by the pro- 
longation of the principal septal radii, twisted round the axis of the corallum. Principal 
1 See tab. xxxviii, fig. 4. 2 Professor M‘Coy, Ann. and Mag. of Nat. Hist., s. 2, vol. ili, p. 2. 
% See tab, xxxvii, fig. 5. * Ann. and Mag. of Nat. Hist., s. 2, vol. iii, p. 2. 
