188 BRITISH FOSSIL CORALS. 



lainella?, connected by numerous delicate transverse vesicular plates ; between each pair at 

 the circumference, a shorter radiating lamella occurs, which only reaches half way to the 

 axis, and where they occur, the connecting vesicular plates are smaller and more numerous 

 than from thence to the axis, the intermediate open cellular space less than the outer one 

 in width ; vertical section indistinctly triareal ; outer area defined, about one sixth of the 

 width on each side, composed of small, much curved, vesicular plates, forming minute 

 semicircular cells, arranged in very oblique rows upwards and outwards, about seven in a 

 row; middle zone rather less than the outer one in width, passing gradually into the 

 central structure, formed of few larger and less-curved vesicular plates than the outer zone, 

 and having a nearly horizontal direction, one or one and a half reaching across the space ; 

 central area composed of large, thin, close, little curved vesicular plates, forming a strongly 

 arched series of narrow, elongate cells, the convexity of the arch upwards, conforming to 

 the shape of the central boss in the cup. If the vertical section be at right angles to the 

 medial fissure, or crest of the central boss, there is a line visible down the middle of the 

 section ; terminal cup deep, lined by the vertical lamella?, and having a large oval promi- 

 nent boss in the centre, traversed by a sharp mesial crest ; about one half or one third of 

 the radiating lamellae ascend the central boss, always in a direct line, those at the sides of 

 the mesial crest being at right angles to it, the others joining at a more acute angle at the 

 approach of the extremity ; and, opposite one end of the crest, we generally observe one or 

 two of the radiating lamella? shorter than the rest, producing a sort of siphon-like irregu- 

 larity, such as we see in Caninia (Zaphrentis). 



" In the Carboniferous Limestone of Derbyshire ; Shale of Beith, Ayrshire." (M'Coy, 

 op. cit.) 



4. Genus Aulophylltjm, (p. lxx.) 



1. Aulophyllum fungites. Tab. XXXVII, fig. 3. 



Fungites, David Tire, History of Rutherglen and East Kilbride, p. 327, pi. xx, fig. 6, 1793. 

 Turbinolia fungites, Fleming, Brit. Anim. p. 510, 1828. 



— — S. Woodward, Syn. Table of Brit. Org. Rem., p. 7, 1830. 



Cyathophyllum fungites, Geinitz, Grund. der Verst., p. 571, 1845-6. 

 Clisiophyllum prolapsum, M'Coy, Ann. and Mag. of Nat. Hist., 2d series, vol. iii, p. 3, 



1849. 

 Aulophyllum prolapsum, Milne Edwards and Jules Haime, Brit. Foss. Corals, Introd., 



p. lxx, 1850. 

 Aulophyllum fungites, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palseoz., 



p. 413, 1851. 

 Clisiophyllum prolapsum, M'Coy, Brit. Palseoz. Foss., p. 95, pi. iiic, fig. 5, 1851. 



Corallum elongate, cyhndro-conical, subpedicellate, curved, presenting small circular 

 accretion ridges, and covered with a well-developed epitheca. Calice not known; upper 



