aI 
bo 
EXPLANATION OF THE PLATES. 
a. Original. Upper surface of a specimen in Wenlock limestone, from Dudley 
Tunnel; showing the chain-like appearance presented by the sections of — 
tubular corallites. Mus. G. 8. I. 
b. Original. Section of some of the tubes enlarged. 
e. Original. Side view of a series of corallites from Wenlock limestone, 
Dormington Wood. Mus. G. 8. I. 
d. ‘‘ Vertical section in a specimen from Dudley.” From Brit. Foss. Corals, 
pl. lxiv., fig. 1 6 (a small portion of the figure only). 
LLANDEILO to WENLOcCK.—Sil., 4th ed., p. 510. ‘This easily recognizable 
coral has a great vertical range and corresponding wide geographical dis- 
tribution. In Lower Silurian rocks it occurs 8. of Llangollen ; and at 
Meifod, Montgomeryshire ; M. G. S., vol. iii, p. 261. InCaradoe strata 
at Faynor Fach, near Narbeth, in rocks of the same age; at Port- 
raine and Lambay, Co. Dublin; Mus. G. 8. I. Desertcreat, Tyrone, Mus. 
G. S. I.; and many localities in the county of Galway (M‘Coy) ; in Lower 
Llandovery at Cefn, near Buttington; Mathyrafal (M‘Coy), &c., M.G.S., 
vol. iil., p. 276; also Robeston Wathen; Mus.G. 8. I. In Wenlock lime- 
stone at Dudley; and several localities in Shropshire ; and at Brand Lodge, 
Malverns; Mus. G. 8. I. In Wenlock rocks at Doonquin, Ferriter’s Cove, 
South Blasket Island, and Clogher Head, Kerry; Kilbride, Cong, Co. 
Galway; and Uggool, Co. Mayo. 
Fig. 4.—a, b, ec. OMPHYMA TURBINATA, Linneus, sp. 
British Fossil Corals, p. 287. 
a. Original. A simple turbinated corallum ; reduced to two-thirds of natu- 
ral size; in Wenlock limestone, from Wenlock Edge. Mus. G. 8. I. 
b. Reduced in the same proportion as fig. 4 a; from Brit. Foss. Corals, pl. 
Ixix., fig. 1 a. 
c. Original. Portion of the vertical section of a specimen from the same 
locality as fig. 4a. 
Carapoc to Wentock.—Sil., 4th ed., p. 511. In Caradoc rocks S. of Llan- 
gollen. M.G.S., vol. iii, p. 261. Wenlock rocks, Dudley, Wenlock ; 
Ledbury, Ayrshire ; Ballintemple and Ferriter’s Cove, Dingle, Co. Kerry ; 
Kilbride, Cong, and Uggool, Co. Mayo. 
Nore.— Cyathophyllum turbinatum, Sil. Syst., p. 690, pl. xvi., figs. 11, 
11a; and Sil., 4th ed. pl. xxxix., fig. 11, is Omphyma subturbmata ; 
Milne, Edwards, and Haime, Brit. Foss. Corals, p. 288, 
