284. BRITISH FOSSIL CORALS. 
5. CyarHopHyLtitum tRuNcatuM. ‘Tab. LXVI, figs. 5, 5a, 54, 5e. 
FunGitm ocro masorgs, &c., Magnus Bromel, Acta Liter. Suec., vol. ii, p. 465, 1728. 
PorPITaRUM PLURIUM, Xe., [bid., pp. 466 and 467, figs. 1—5, 1728. 
Maprepora composita, &c., Fougt, Ameen. Acad., vol. i, p. 93, tab. iv, fig. 10, 1749. 
Funerres, Thomas Pennant, Phil. Trans., vol. xlix, 2d part, pp. 514 and 516, tab. xv, figs. 
; 6 and 12, 1757. 
MADREPORA TRUNCATA, Linné, Syst. Nat., edit. 10, p. 795, 1748. 
— — Tinné, Fauna Suec., p. 536, 1761. 
— — Linné, Syst. Nat., edit. 12, p. 1277, 1767. 
SrroMBopEs TRUNCATUS, Schweigger, Handb. der Naturg., p. 418, 1820. 
Mapreporites truncatus, Wahlenberg, Nov. Act. Soc. Upsal., vol. vil, p. 97, 1821. 
SrromBoDeEs TRuNcATUS, Hichwald, Zool. Spec., vol. i, p. 188, 1829. 
FLOSCULARIA COROLLIGERA, Idid., p. 188, pl. xi, fig. 4. 
STROMBASTRHA TRUNCATA, De Blainville, Dict. des Sc. Nat., vol. lx, p. 342, 1830.—Man., 
p- 376. 
CaRYOPHYLLIA EXPLANATA, Hisinger, Anteckningar, vol. v, p. 129, tab. viii, fig. 9, 1831. 
—_ — Hisinger, Leth. Suec., p. 101, tab. xxviii, fig. 13, 1837. 
CYATHOPHYLLUM pDIaNTHUS, Lonsdale, Silur. Syst., p. 690, pl. xvi, figs. 12, 12d (Cet. excl.), 
1839. (Not Goldfuss.) 
_ — var. PROLIFERA, Hiehwald, Silur. Syst. in Esthland, p. 200, 1840. 
— TRUNCATUM, Bronn, Index Pal., vol. i, p. 370, 1848. 
-- suBDIANTHUS, D’ Orbigny, Prodr. de Pal., vol. i, p. 47, 1850. 
STREPHODES VERMICULOIDES, M‘Coy, Ann. and Mag. of Nat. Hist., 2d ser., vol. vi, p. 275, 
1850. 
— — M‘Coy, Brit. Palzoz. Foss., p. 31, pl. iB, fig. 22, 1851. 
CyaTHOPHYLLUM TRUNCATUM, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Paleeoz. 
(Arch. du Mus., vol. v), p. 379, 1851. 
Corallum composite, forming a tall turbinate mass, the basis of which is occupied by 
the parent corallite, and the upper surface is convex, and occupied by calices that vary very 
much in size, and are generally free at their edges, but sometimes meet, and become 
partially soldered together. Gemmation exclusively calicinal. Corallites regularly 
turbinate, not very tall, and narrow at their basis. Walls covered with a very thin 
epitheca, and presenting numerous strongly marked accretion ridges. Calices circular, or 
deformed by the pressure of the neighbouring corallites, and terminated by thin, slightly 
everted edges. Central fossula large, and rather deep; outer part of the calice almost flat. 
Septa (50 or 60) very closely set and thick, towards the circumference, but rather 
thin towards the centre, rather unequal in length alternately ; the largest reaching to the 
centre. ‘The internal structure of the corallites very dense. The ¢abule are small, and not 
very distinct exteriorly from the regular dissepiments that divide obliquely the interseptal 
spaces. Height of the corallites 1 or 14 inch; diameter somewhat less. 
It is found at Much Wenlock, and Benthall Edge, Ledbury, Haven near Aymestry, 
and Wenlock Edge (Murchison); Portrane and Malahide, Dublin (M‘Coy). Sweden 
and Russia. 
