680 



SILURIAN CORALS. 



Blumenbachium, Konig. 



Blumenbachium globosumf (Konig.), PI. 15. f. 26, 26 a nat. size and magnified twice. 

 Ref. Icones Fossilium Sectiles. Cent. Prima, p. 3. Tab. V. f. 69. 



The specimen figured in PI. 15. differs from that represented in the Icones Fossilium 

 Sectiles. The rays are compound, and are indistinct in number, but exceed four. The surface 

 is not distinctly punctured, the few pores which are visible having been produced probably by 

 the unequal action of the acid, used in preparing the slab for sale. The interstices between 

 the stars are also unequally furrowed. It has, nevertheless, not been thought advisable to 

 consider the specimen as belonging to a distinct species. 

 Formation and locality. Wenlock Limestone, Dudley. 



Gorgonia, Linnaeus. 



Gorgonia assimilis, sp. n. Lons. PI. 15. f. 27 nat. size, 27 a portion magnified to show the strise. 



G. Axis round, branched, faintly striated longitudinally : branches anastomosed : no project- 

 ing papillae, or impressed pores. 



It is impossible to determine if this fossil be a true Gorgonia ; but from its great resem- 

 blance to the axis of some existing species, I have ventured to place it in that genus. 

 Formation and locality. Wenlock Limestone, Dudley. 



PI. 15. f. 28, 28 a represent a portion of a coral Which may be a Gorgonia. It was found in 

 Encrinital Shale at Alfric, Malvern. 

 Ceriopora, Goldfuss. 



Ceriopora granulosa (Goldfuss), PI. 15. f. 29, 29 a nat. size and magnified. 

 The internal structure of this coral I have not ascertained. 

 Ref. Goldfuss, Petref. p. 2l7. Taf. LXIV. f. 13. 



Formation and locality in England. Wenlock Limestone, Dudley, Ledbury. 

 Foreign locality and authority. Eifel, Goldfuss. 

 Heteropora, De Blainville, not Ehrenberg. 



Heteropora crassa, sp. n. Lons. PI. 15. f. 14, 14 a nat. size and portion magnified. 



H. Branched, the branches thick, tubes small, radiating from a centre ; transverse fracture 

 concentric layers formed of two systems of tubes, one visible to the naked eye, the other mi- 

 croscopic, numerous and close together. 



Formation and locality in England. Wenlock Limestone, Benthall Edge. 

 The specimen is in the collection of Mr. Goodhall. 

 Millepora, Linnaeus. 



Millepora repens (Hisinger), PI. 15. f. 30, 30 a nat. size ; the former is from a worn specimen. 

 Syn. and Ref. Millepora, Fougt, 1745., Linn. Amoen. Acad., t. i. p. 202. f. 15., 1749. 

 Millepora repens, Hisinger, Lethaea Suecica, p. 102. Tab. XXIX. f. 5., 1837- 



In the regularity of the openings, this coral resembles the genus Seriatopora ; but it differs 

 from the Seriatopora subulata, (Lamk.), in being cellular and not solid in the centre. 

 Formation and localities in England. Wenlock Limestone, Lincoln Hill, Coal brook Dale, 



Benthall Edge, Dudley, Hurst Hill, Sedgley. 

 Foreign localities and authorities. Shores of the Baltic, Fougt; Gothland, Hisinger. 

 Stromatopora, Goldfuss. 



Stromatopora concentrica (Goldfuss), PI. 15. f. 31 to 31 d. — 31 nat. size, 31 a portion of the surface 

 magnified, 31 b section of 31, 31 c part of 31 b magnified twice, 31 d small portion of a large 

 specimen in which the very thinly laminated structure is obliterated. 



