CORALS FROM THE MOUNTAIN LIMESTONE. 197 



Lithodendeon sexdecimale and coarctatum, M'Coy, Syn. Carb. Foss. of Ireland, 



pp. 188-89, 1844. 

 Cladocora sexdecimalis, Geinitz, Grund. der Vert., p. 570, 1845-46. 

 Diphyphyllum sexdecimale D'Orbiffny, Prod, de Pal., vol. i, p. 159, 1850. 

 Lithostrotion junceum, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Paleeoz., 



p. 435, 1851. 

 Siphonodendron sexdecimale, M'Coy, Brit. Paleeoz. Foss., p. 109, 1851. 



Corallum composite, fasciculate. Corallites very elongate, cylindrical, straight, or but 

 slightly irregular, strongly bent upwards near their basis, and placed at various distances, 

 but rarely coalescent. Epitheea delicately wrinkled transversely. Columella rather large, 

 slightly compressed. Principal septa 16 or 18, alternating with an equal number of 

 smaller ones, and extending very near to the columella. Diameter of the corallites 

 about 1^ line. 



Found at Mold, Wellington, Oswestry, Allendale ; according to Professor Phillips, at 

 Kirby Lonsdale, Kettlewell, Penyghent, Aldstone Moor, Veynal ; according to D. Ure, at 

 Rutherglen, Lanarck ; according to Professor M'Coy, at Kendal, Lowick, and Burdiehouse ; 

 and according to Colonel Portlock, in Ireland, at Derryloran and Corkstown. It is met 

 with also at Vise, in Belgium, and in the Oural Mountains. 



Specimens are in the collections of the Geological Society, of the Museum of Practical 

 Geology, of Mr. Bowerbank, &c. 



10. Lithostrotion Martini. Tab. XL, figs. 2, 2a, 2d, 2c, 2d, 2e, 2/, 2g. 



Erismatolithus, &c, William Martin, Petref. Derb., pi. xvii, 1809. 

 Caryophyllia fasciculata, Fleming, Brit. Anim., p. 509, 1828. (Not Lamarck.) 

 Lithodendron fasciculatum, Phillips, Geol. of Yorkshire, vol. ii, p. 202, pi. ii, figs. 16, 17, 



1836. 

 Caryophyllia fasciculata, De Koninck, Anim. Foss. des Terr. Carb. de Belg., p. 17, 



pi. d, fig. 5, and pi. g, fig. 9, 1842. 

 Lithodendron cespitosum, M'Coy, Syn. Carb. Foss. of Ireland, p. 188, 1844. (Not 



Goldfuss.) 

 Lithodendron fasciculatum, Lonsdale, in Murch., Vera., et Keys., Russ. and Ur., vol. i, 



p. 600, 1845. 

 Cladocora fasciculata, Geinitz, Grundr. der Verst., p. 570, 1845-46. 

 Diphyphyllum fasciculatum, D'Orbiffny, Prod, de Palseont., vol. i, p. 159, 1850. 

 Lithostrotion Martini, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palseoz., 



p. 436, 1851. 

 Siphonodendron fasciculatum, M'Coy, Brit. Palseoz. Foss., p. 108, 1851. 



Corallum fasciculate. Corallites very tall, cylindrical, slightly flexuous, and often 

 coalescent. Epitheca thin, and not hiding the delicate, straight, flat striae, formed by the 

 closely set costae. Calices circular. Columella rather thin, and very much compressed. 

 Septa extremely thin, straight, or but slightly curved, and rather closely set ; 26 principal 

 ones, reaching almost to the outer of the tabulae, and 20 small ones that do not extend 



