CORALS FROM THE MOUNTAIN LIMESTONE. 183 



somewhat vesicular at certain parts ; interseptal vesicular dissepiments abundant and 

 pretty regular. Diameter of the calices 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 a of the Wenlock rocks, but its septa are much thinner, 

 and its corallites more cylindrical. 



Cyathophylltjm Archiacis. 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 3^ inches ; depth of the 

 calice \\ 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 2 has referred to the Clisiophyllum multiplex of Keyserling 3 appears to belong to 

 this species ; it was found at Kendal, Westmoreland. 



Professor M'Coy 4 states that Turbinolopsis bina, T. celtica, T. pauciradialis, and 

 T. pluriradialis of Professor Phillips, which appertain to the genus Cyathophyllum, and 

 belong to the Devonian formation, are also met with in the carboniferous deposits in 

 Ireland ; 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. Palseoz., p. 379. 



2 Brit. Palseoz. Foss., p. 95. 

 s Petschora, tab. ii, fig. 1. 



4 Syn. of Carb. Foss. of Ireland, p. 186. 



