SILURIAN CORALS. 679 



Discopora, Lamarck. 



Discopora antiqua f (Milne Edwards), PI. 15. f. 21, 21 a upper surface worn, nat. size and mag- 

 nified, 21 b upper and under surfaces nat. size. 



Syn. and Ref. Cellepora antiqua, Goldfuss, Petref. p. 27- Taf. IX. f. 8. 1826. 

 Membranipora antiqua, De Blainville, Man. d'Actinol., p. 447. 1834. 

 Discopora antiqua, Milne Edwards, 2nd Edit. Lamarck, t. 2. p. 253. 1836. 



The opening of the cells is less regular in form and arrangement than in that giren in 

 Goldfuss's magnified figure ; the indentations are also less distinct and regular. The specimens 

 of this coral are generally much worn on the upper surface, and the opening of the cells is 

 therefore not often visible ; but where it has been preserved the upper wall is arched, as in the 

 next species. The under surface is smooth or marked with concentric lines (f. 21 b,). 

 Formation and locality in England. Wenlock Limestone, Dudley. 

 Foreign locality and authority. Eifel, Goldfuss. 

 Discopora squamata, sp. n. Lons. PI. 15. f. 23, 23 a nat. size and magnified. 



D. Cells contiguous, more or less regularly disposed, opening not contracted, vertical, upper 

 margin projecting, arched. 



Formation and localities. Wenlock Limestone, Dudley ; Hurst Hill, Sedgley. 

 Discopora? favosa, Lons. PI. 15. f. 22, 22 a nat. size and magnified twice. 



Syn. and Ref. Cellepora favosa, Goldfuss, Petref. p. 217- Taf. LXIV. f. 16. 



This fossil presents an elevation in the centre as if composed of more than one layer of cells ; 



but a similar specimen, when worn down vertically, consisted of a single layer. 



Formation and locality in England. Wenlock Limestone, Dudley. 



Foreign locality and authority. Eifel, Goldfuss. 

 Berenicea, Lamouroux. 



Berenicea irregularis, PL 15. f. 20, 20 c nat. size and magnified. 



B. Opening of the cells round, distant where the surface is flat, generally near together where 



it is uneven ; more or less regularly disposed from a centre. 



Formation and locality. Wenlock Limestone, Dudley. 

 Retepora, Lamarck. 



Retepora infundibulum, sp. n. Lons. PL 15. f. 24 nat. size. 



R. Funnel-shaped-, branches united in a thick net- work, the interstices being small and variable 



in shape : inner surface two vertical rows of pores. 



The arrangement of the pores is similar to that in Fenestella, but on the inner, and not the 



external surface. A very small fragment only of the interior has been examined. 



Formation and locality. Wenlock Limestone, Dudley. 

 Eschara, Pallas, Lamarck. 



Eschara ? scalpellum, sp. n. Lons. PL 15. f. 25, 25 a nat. size and magnified twice, 25 b section. 



E. Lancet-shaped : cells more or less oval, nearly opposite on the two surfaces : outer rows, 

 cells smaller and more distant than in the other rows : edge of the coral when perfect, solid, 

 faintly striated and sharp : outer covering and opening of the cells unknown. 



This coral is placed in the genus Eschara, on account of the apparent thickening of the 

 surface of the outer cells ; and the cells being nearly opposite on the two sides. In some 

 specimens the thickening of surface of the outer row is so great as nearly to obliterate the 

 opening of the cells. 



Formation and locality. Wenlock Limestone, Dudley. 



4 r 2 



