222 BRITISH FOSSIL CORALS. 



Family STAURIDtE, (p. Ixiv.) 

 Genus Metriophyllum Battersbyi. 



Metriophyllum Battersbyi. Tab. XLIX, fig. 4. 



Metriophyllum Battersbyi, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palseoz., 



p. 318, 1851. 



This species has been established by -the study of a polished slab belonging to the 

 collection of Dr. Battersby, and showing a transverse section made at a small distance 

 below the calice. The quadrifascicular mode of arrangement of the septa is very distinct. 

 The principal septa are forty-eight in nmnber, somewhat thick, and extending to the 

 centre of the coral ; they alternate with an equal number of smaller ones which are also 

 thinner ; towards the middle of each group they are slightly flexuous, and towards the 

 outer part they become shorter and somewhat oblique. Some dissepiments are also visible. 

 Diameter about eight lines. 



Found at Torquay. 



This species differs from Metriophyllum Bouchard^ by its septse being twice as 

 numerous and shghtly thickened near the centre. 



Family CYATHOPHYLLIDtE, (p. Ixv.) 

 I. Genus Amplexus, (p. Ixvi.) 



Amplexus tortuosus. Tab. XLIX, figs. 5, 5«. 



Amplexus tortuosus, Fhillips, Palseoz. Foss., p. 8, pi. iii, fig. 8, 1841. 



— — Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palseoz., p. 347, 



1851. 

 ^ yandelli, (pars), ibid., p. 344. 



— tortuosus, M'Coy, British Palseoz. Foss., p. 70, 1851. 



Corallum elongate, cylindrico-conical, curved, and slightly tortuous; circular 

 wrinkles well developed and irregular. Epitlteca strong, and wrinkled transversely. 

 Calice suboval, with 4 distinct septal fossulae, (the one placed near the convex side of the 

 corallum larger and deeper than the three others). Tahula not very closely set, irregular, 

 and presenting in the centre a large smooth space. Septa (30 to 50 in the adult 



1 Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palseoz., p. 318, pi. vii, figs. 1, 2. 



