CARBONIFEROUS CORALS AND BRACHIOPODS 119' 
fine vesicles, whilst, between the primary septa, are a 
conspicuous series of secondaries which extend almost 
to the inner boundary of the broad vesicular area. 
The specimen may be doubtfully referred to the section 
Acrophyllitm (Thomson), but it is possible that the central 
area originally exhibited lamellae which have been sub- 
sequently removed by solution. (In this case the specie 
men would belong to the section DihunopJiyllum.) 
Clisiophyllum, sp., or CyatJio'phylhim, sp. 
There is, in the collection, a short, cylindrical specimen,, 
cut across and polished, which cannot be definitely assigned 
to its correct genus until more material is at hand. 
The total diameter is about 38 m.m., with a central 
tabulate area of 14 mm., which is surrounded by a promi- 
nent septal ring, a little over 4 mm. wide. The outer area 
(nearly 8 m.m. wide) is occupied by close vesicular tissue,, 
crossed by delicate prolongations of the primary septa, 
as well as by an equally thin series of secondary septa. 
There are sixty-four septa, which exhibit an almost per- 
fect radial symmetry, bilateral symmetry being only sug- 
gested by the occurrence of two septa placed close together 
at one point. The vesicles are small and very regularly 
arranged, in radial rows, between the septa. 
The nature of the central area is not very distinctly 
shown, but appears to be purely tabular. The outer 
vesicular area strongly suggests some member of the 
Clisiophyllid group, and it is possible that the specimen 
may be some member of the Koninckophyllum section (cf. 
PI. 1, Fig. 3, vol. X., Proc. Phil. Soc., Glasgow), in which the 
central structure is almost purely tabular. 
The specimen also bears close resemblance to Cyatho- 
phylla oith.Qdianthoides^Qciion (cf. PL 3c., Fig. 7a, McCoy, 
Palaeozoic Fossils), and is less clearly allied to the genus 
