368 R. F. TOMES ON MADREPORARIA FROM THE LIAS OF 
been broken off inferiorly at a constricted point, and has lost its 
calicular termination. 
The figure of Montlivaltia pedunculata, given on plate viii., from 
Brocastle, is distinctly referable to another species. 
As in other Sutton-Stone corals, which have also been found in 
the St. Cassian beds, the corallites of this species have a greater 
diameter than is observable in the Alpine representatives. 
Genus Enysastr za, Laube. 
Eysastr“A Fiscuert, Laube, loc. cit. p. 262, Taf. v. fig. 6; Dun- 
can, loc. cit. p. 29, pl. vi. figs. 5-9. 
Elysastrea Moorei, Dune. loc. cit. p. 30, pl. vi. figs. 10-15. 
Of all the Madreporaria which occur in the Sutton Stone, this is 
by far the most abundant species. It is, however, very unequally 
distributed, appearing in some places in great masses, the corallites 
of which, either more or less closely packed, or in disjointed branches, 
penetrate the stone through and through. In other places scarcely 
a fragment can be seen. Notwithstanding a very careful exami- 
nation, [ have not in a single instance met with the Hlysastrea 
growing on the floor of Mountain Limestone beneath the Sutton 
Stone, nor indeed have I seen any of the Madreporaria so placed. 
But [ have found many specimens of immature growth attached to 
rounded lumps of that rock, as well as to lumps of conglomerate. 
This is a very variable species, and the closest investigation has 
failed to satisfy me that there are two species in the Sutton Stone. 
On the contrary it has convinced me that the characters attributed to 
the two species may be seen in different parts of the same corallum. 
I have not hesitated, therefore, to place the name of the one as a 
synonym of the other. Of the generic character supposed to be 
presented by the appearance of a ring of septa within the ordinary 
ones, I may remark that it is nothing more than one stage of reju- 
venescence. Nevertheless that mode of growth is so unusual in the 
compound Astreide, as to constitute a marked feature, as I have 
elsewhere stated that the same thing sometimes takes place in 
- Confusasirea*, But there is one characteristic which deserves 
especial notice, and which seems to denote some affinity with Latr- 
meandra; I allude to the existence of elongated and compound 
calices amongst the circular and simple ones. 
' 
Genus RuappopHyriia, Edw. & Haime. 
RHABDOPHYLLIA RECONDITA, Laube, loc. cit. p. 255, Taf. iv. fig. 3. 
Notwithstanding that a very diligent search has been made for 
this species in the Sutton Stone, no other specimen has been met 
with. The one figured by Prof. Duncan, though only a fragment, 
fully identifies the species, but differs from Laube’s figures just as 
* Quart. Journ. Geol. Soc. vol. xxxviil. p. 423. 
