SYRING OPORID^E. 2 1 7 



Formation and Locality. Abundant in the Carboniferous 

 Limestone of Kendal, Shap, Cross-Fell, Red- Hills, and other 

 localities in Westmorland and Cumberland. 



Syringopora geniculata, Phillips. 

 (PL X., figs. 4- 



Syringopora geniculata, Phillips, Geol. of Yorkshire, vol. ii. p. 201, PL II., 



fig. i, 1836. 

 geniculata, M'Coy, Syn. Carb. Foss. of Ireland, p. 190, 1844; 



and Brit. Pal. Foss., p. 83, 1851. 

 geniculata, Milne-Edwards and Haime, Pol. Foss. des Terr. Pal., 



p. 291, 1851 ; and Brit. Foss. Cor., p. 163, PL XLVL, figs. 2, 



2 a, and 4, 1852. 

 geniculata^ De Koninck, Nouv. Rech. sur les An. Foss., PL XI., 



fig. 8, and XII., fig. 2, 1872. 



Spec. Char. Corallum fasciculate, of long, diverging, close- 

 set, cylindrical, thick-walled tubes, which are enclosed in a 

 thick wrinkled epitheca, and are usually rather less than one 

 line in diameter. Connecting-tubes numerous, having no reg- 

 ular distribution, and usually placed at distances apart of one 

 line or less, though sometimes more remote. Wall often 

 thickened by a dense laminated secondary deposit of scler- 

 enchyma. Septa short and spiniform. Tabulae numerous, 

 infundibuliform, and giving rise to an axial tube. Distance 

 between the corallites variable, but mostly half a line or less. 



Obs. This species is commonly associated with the preced- 

 ing in the Carboniferous Limestone, and is usually easily to be 

 distinguished from it by the more marked divergence of the 

 corallites from the base of the colony, their closer approxima- 

 tion to one another, their more conspicuously round tubes, their 

 thicker walls, and the greater abundance of the connecting- 

 processes, together with the rather smaller diameter of the 

 corallites. The specific name would indicate that the tubes 

 were markedly geniculate ; but this is by no means the case, 

 and the corallites resemble those of S. reticulata, Goldf., in 

 being simply flexuous. In all the principal features of its 



