CORALS FROM THE MOUNTAIN LIMESTONE. 183 
somewhat vesicular at certain parts; interseptal vesicular dissepiments abundant and 
pretty regular. Diameter of the ca/ices from 6 lines to 1 inch or more. Found at 
Arnside and Kendal, Westmoreland. 
Specimens are in the Cambridge Museum. ‘This species, by its general aspect, much 
resembles Cyathophyllum truncatum* of the Wenlock rocks, but its septa are much thinner, 
and its corallites more cylindrical. 
CyatHorHyiium Arcuiacis. ‘Tab. XXXIV, fig. 7. 
Corallum simple, conical; somewhat elongate, curved, very slightly compressed, and 
presenting a few slight, broad, circular accretion swellings. Epitheca thin. Calice 
oval, with a lamellate edge, a rather deep cavity, and a rudimentary, elongate, septal 
fossula. Septa very numerous, very thin, closely set, and appearing to be somewhat 
unequal alternately ; towards the centre of the calice they project a little, so as to con- 
stitute paliform lobes, which, by their agglomeration, form an oblong ridge. Height of 
the corallum about 6 inches; long diameter of the calice about 34 inches; depth of the 
calice 14 or 2 inches. 
Found in the carboniferous limestone, at Llanymynch, by Sir Roderick I. Murchison. 
The specimen here figured belongs to the Collection of the Geological Society. 
This species differs from all the other simple Cyathophylla, by the oval form of its 
calice, its paliform lobes, and its rudimentary septal fossula. The fossil which Professor 
M‘Coy* has referred to the Clisiophyllum multiplex of Keyserling® appears to belong to 
this species ; it was found at Kendal, Westmoreland, 
Professor M‘Coy* states that TurBinoLopsis BINA, T. ceLtIca, 'T. PAUCIRADIALIS, and 
T. pLurtRaDIALts of Professor Phillips, which appertain to the genus Cyathophyllum, and 
belong to the Devonian formation, are also met with in the carboniferous deposits in 
Treland; but as he has given neither description nor figures of the Corals alluded to, we 
entertain great doubts relative to the exactness of these determinations. 
1 Polyp. Foss. des Terr. Palzeoz., p. 379. 
2 Brit. Paleeoz. Foss., p. 95. 
* Petschora, tab. ii, fig. 1. 
* Syn. of Carb. Foss. of Ireland, p. 186. 
