MIDDLE AND WESTERN ENGLAND AND SOUTH WALES. 367 
Tuecosminia mayor, H. de Ferry, in Dumortier, Etude Paléont. 
Dépéts Jurass. du Bassin du Rhone, p. 173, pl. xxvui. fig. 1, 
2, 3, 4 (1864). 
Montlivaliia polymorpha, Duncan, loc. cit. p. 8, pl. vu. figs. 14, 
15, pl. vil. figs. 1, 2, 3, 4, 14, 15 (not Terquem et Piette) (1866). 
After the examination of the specimens figured by Professor 
Dunean as I. polymorpha, now in the Bath Museum, as well as a 
number of others in my own collection, all from the Brocastle con- 
glomerate, I’ am fully satisfied of the necessity for placing them in 
the genus Thecosmilia, and referring them to the Thecosmilia major 
of M. de Ferry. The larger and more perfect specimens consist of 
two corallites supported by a rather tall peduncle, and the latter 
part, in all the specimens [| have seen, is longer than is represented 
by figure 13 of plate viii. in Prof. Duncan’s work. Moreover the 
corallites separate from each other much less rapidly. As the cali- 
cular surface, in the specimen from which that figure was taken, is 
wholly hidden in the matrix, it is difficult to determine with 
certainty to what species it should bereferred. There is a tendency 
in the present species to a rapid increase in diameter of the corallite, 
just at the calice, which gives the latter great openness. This pecu- 
liarity is slightly shown in figure 15 of the plate above referred to. 
- Genus CrapopHyiiia, Edw. & Haime. 
CLADOPHYLLIA SUBLZVIs, Laube, loc. cit. p. 259, tab. iv. f. 5. 
At one place only in the Sutton Stone, to the best of my know- 
ledge, has the present species been found. My friend Mr. T. J. 
Slatter discovered it in an abandoned quarry close by the side of 
the road leading from Sutton to the river Ogmore, quite at the 
western extremity of the Sutton Stone, and, as far as could be 
ascertained, nearly at its base. It was observed to lie in a thin 
seam, in which were a number of ill-preserved and crowded frag- 
ments. Unlike most of the corals which are common to the 
St. Cassian beds and to the Sutton Stone, the corallites of this one 
haye not a greater diameter than is shown in Laube’s figures. 
CLADOPHYLLIA suBDICHOTOMA, Laube, Joc. cit. p. 258, Taf. iv fig. 2. 
- (Plate XTX. figs. 10, 11.) 
Monilivaliia pedunculata, Duncan, loc. cit. p. 10, pl. ii. figs. 12, 13. 
A considerable number of fragments of a bush-shaped coral occur 
in the Sutton Stone, which usually present swellings and constric- 
tions, and, generally speaking, have a shallow calice, which has a 
sublobate outline. It is only, however, occasionally that the calices 
are sufficiently preserved to permit satisfactory examination. More 
frequently the calicular surface resembles that shown in Prof. 
Dunean’s figure of Montlivaltia pedunculata (pl. ii. figs. 12, 18), 
which is, in fact, the representation of such a fragment, which has 
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