MIDDLE AND WESTERN ENGLAND AND SOUTH WALES. 371 
preservation, is all I have met with. The peculiar septal 
arrangement distinguishes it from the foregoing species; but I 
may observe that the union of the shorter with the longer septa is 
sometimes also observable in some of the calices of S. gibbosa, as is, 
indeed, shown in Prof. Duncan’s enlarged figure. The calices of 
this species are more polygonal than in most others, which is due to 
their being rather more closely placed. Nevertheless there are 
some parts of the corallum where they are wider apart and 
circular. 
STYLASTRHA PARASITICA, Duncan, sp. 
Astrocema parasitica, Duncan, loc. cit. p, 20, pl. v. figs. 5, 6. 
I am only acquainted with this species through the means of 
Prof. Duncan’s description and figures. The great distance of the 
calices from each other, as well as their circular outline, and the 
obviously great amount of coenenchyma between them, indicate a 
form which cannot be at all nearly related to Astrocenia, which 
is characterized by corallites closely connected by their walls. 
SryLAsTR#HA Insienis, Duncan, sp. 
Astrocenia insignis, Duncan, loc. cit. p. 19, pl. ix. figs. 1, 2. 
This is a well-marked species, and not uncommon in the Brocastle 
conglomerate, from which I obtained some fine specimens in 1862. 
STYLASTRHA PEDUNCULATA, Duncan, sp. 
Astrocema pedunculata, Duncan, loc. cit. p. 20, pl. v. figs. 7, 8, 9. 
Iam only acquainted with the species through Prof. Duncan’s 
ficures and a very cursory inspection of the type specimen. It is 
remarkable for the wide spaces between the calices. 
SryLASTRAA DENDROIDEA, Duncan, sp. 
Astrocenia dendroidea, Duncan, loc. cit. p. 22, pl. ix. figs. 10, 11. 
Many fragments of this coral occur at Brocastle, all of which 
present much the appearance of the specimen from which Prof. 
Duncan drew up his description. It is rather remarkable that no 
dendroid species either of this genus or of Cyathocenia have been 
recorded as occurring in the Sutton Stone. 
SrynastRmA MinvTA, Duncan, sp. 
Astrocenia minuta, Duncan, loc. cit. p. 22, pl. ix. figs. 18, 19, 20. 
Of unfrequent appearance in the Brocastle conglomerate, the 
present species is readily distinguishable from all the others by the 
small size of the calices and the presence of a paliform tooth on each 
septum in close proximity to the columella. The latter peculiarity 
appears also in a species from the Azzarola beds, which is evidently 
allied to the present, and which has been described by Stoppani as 
a Stylina. Both show a remarkable resemblance in the above 
