MIDDLE AND WESTERN ENGLAND AND SOUTH WALES. 369 
the other St. Cassian species do which are found in the Sutton Stone, 
that is to say, in having a greater diameter in the individual 
corallites. 
RHABDOPHYLLIA, sp. 
A polished piece of the Brocastle conglomerate reveals a horizontal 
section of a corallite of a species of Rhabdophyllia, with a small 
diameter and twenty-six short and stout septa, the alternate ones 
being stouter and longer than the others, and a columella which 
occupies fully one half of the entire diameter of the calice, and the 
papille of which are far apart and irregular in size. 
Genus CaLaAmopHy.tia, Blainy. 
J have followed Laube in attributing to the genus Calamophyllia 
a coral from the Sutton Stone which is evidently identical with one 
from the St. Cassian beds. It is the Calamophyllia cassiana of 
that author. But it is worthy of note that the naked costu- 
lated walls which constitute an important feature in Calamophyllia, 
are also cbservable in other forms from the St. Cassian beds, and 
in some of those figured by Stoppani from the Azzarola beds of 
Lombardy. Such are Cladophyllia subdichotoma, Laube, Rhabdo- 
phyllia recondita, Laube, Rhabdophyllia langobardica, Stoppani, and 
R. Meneghim, RR. De-Filppi, and R. Selle of the same author. In 
all of these, with the exception of the last, the corallites are cha- 
racterized by alternately swollen and attenuated portions; and all 
have calices which differ so much from the usual circular form as 
to become sublobular. Bearing these peculiarities in mind, and 
remembering that the corallites of Calamophyllia are jointed rather 
than swollen, it may perhaps be desirable that the present genus 
should be adopted provisionally. 
CALAMOPHYLLIA cassIaAna, Laube, loc. cit. p. 254, Taf. iv. fig. 1. 
(Plate XIX. figs. 5-7.) 
At present my knowledge of this as a Sutton-Stone species is 
confined to fragments which were taken by my friend Mr. T. J. 
Slatter and myself from the exposures at Sutton These, however, 
are in a sufficiently perfect state to render their identification a 
matter of no uncertainty. 
Genus Srynastrma, Fromentel. 
This genus was created in 1860 by M. de Fromentel for the 
reception of two species of composite corals from the Amm.-angulatus- 
beds of the Lias of the Céte-d’or. It is characterized by circular 
calices which are not united by their walls, but by coenenchyma 
having cost which are non-confluent and denticulated, by septa 
which are exsert and strongly denticulated, and by a well-develo 
and styliform columella. That some, if not all, of the so-called 
Astrocenie from the Sutton-Stone and Brocastle deposits in South 
Wales, are referable to this genus, whatever may be its affinities, I 
do not entertain the least doubt. In some of the species in which 
