CORALS FROM THE SILURIAN FORMATION. 267 
3. Monticuirora Firrcurert. Tab. LXII, figs. 3, 3a. 
CALAMOPORA SPONGITES? var. Goldfuss, Petref. Germ., vol. i, p. 216, pl. 64, fig. 10 (in parte), 
1833. 
FavosITEs SPONGITES (pars), Lonsdale, in Murchison, Silur. Syst., pl. xv dis, figs. 9, 9a, 96 
(cet. excl.), 1839. 
Cu#tetes Frercnert, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Paleeoz. (Arch. 
du Mus., vol. v), p. 271, 1851. 
_ LYCOPERDON (pars), J. Hall, Paleont. of New York, vol. ii, p. 40, pl. xvii, 
figs. 1 g—z (ceet. excl.), 1852. 
Corallum dendroidal; branches about one and a half or two lines in diameter, and not 
bearing any well-characterised tubercles. Calices of two kinds ; some circular, very closely 
set, and about one eighth of a line in diameter; others subpolygonal, much smaller, and 
placed between the former ones. 
Dudley. North America, in the Clinton group (J. Hall). 
Specimens are in the Collections of the Geological Society, of Mr. Fletcher, of the 
Museum of Paris, &e. 
By its general form JZ. Fletchert resembles M. pulchella,' but its branches are slenderer, 
and bifurcate under a more obtuse angle. Both these species are almost deprived of the 
tubercles which are in general so remarkable in the corals of this genus, but the mode of 
arrangement of the calices differs: in JZ. pulchella, the large calices are in general col- 
lected in groups amongst the smaller ones; whereas, in J/. Metcheri, the smaller cells 
are set irregularly between the large ones, which vary but little. 
4. MonticuLipora PULCHELLA. Tab. LXII, figs. 5, 5a, 50. 
CHMHTETES PULCHELLUS, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palzeoz., 
p. 271, 1851. 
Corallum ramose ; its branches often somewhat compressed, and from two to four lines 
in diameter. Tubercles broad, not very prominent, and somewhat stellated. Calices 
rather regularly hexagonal, and very unequal in size; those that occupy the centre of the 
tubercles about one fifth of a line in diameter, and at least twice as large as those placed 
in the intervals between the groups thus formed. 
Wenlock, Dudley, Coalbrook Dale. 
Specimens in the Collections of the Geological Society, of Mr. Fletcher, &c. 
This species, as we have already mentioned, much resembles Monticulipora Hetchert,’ 
but differs from it by the mode of grouping of the cells, and the size and the angle of 
bifurcation of its branches. 
1 See tab. Ixii, figs. 5, 5a. 2 See tab. Ixii, fig. 3. 
