Pig. 3. 



CALCIFEEOTJS SAl^DSTONE OP FIFE. 573 



ion of Myalina-6^c? and coal, near the Bock and Spindle, 



a. 5 feet of Mycdina limestone ; h. 9 inches of black shale with fish-scales ; 

 c. 16 inches of coarse burnt coal ; d. Fireclay with Stigmarian rootlets. 



Limestone No. 3a is 10 feet or more below ; it is 2 feet thick, 

 and rests upon a foot of good cherry coal. It contains the following 

 species : — 



Leperditia Okeni, var. attenuata,e7". (^K. 



, var. extuberata, J. ^ K. 



, var, scotoburdigalensis,^ 



Hib. 

 Kirkbya spiralis, J". ^ K. 

 Plant-remains. 



Ctenacanthus, sp. 



Eurynotus crenatus, Ag. (scales). 



Palatal teeth. 



Murchisonia, sp. 



Schizodus Salteri, Eth. 



A thin Anthracomya-like shell. 



Another thick sandstone intervenes. 



Limestone Ko. 4 (3343 feet) is about 11 inches thick, shaly at 

 the top, and rests on a thin seam of coal. Its fossils are : — 



Leperditia Okeni, var. attenuata, 



Spirorbis 



Myalina modioliformis, Brown. 

 Kirkbya spiralis, J, df- K. 

 Leperditia Okeni, var, scotoburdiga- 

 lensis, Hib. 



Fish-spine, Ctenacanthus ? 

 Lepidodendron, sp. 



Shale, black in places and with plant-remains, and sandstone 

 intervene. 



Limestone No. 5 (3380 feet) is grey, weathering yellow and red 

 on the surface, hard, subcrystalline, and 2 feet 9 inches thick, 

 inclusive of a centre band of shale. Its upper surface is thickly 

 strewed with the shells of Schizodus Salteri, along with rarer 

 specimens of Orthoceras cylindraceum? , Aviculopecten granosus, &c. 

 The following is a list of its fossils : — 



Bairdia siliquoides, J. ^ K. 

 Beyrichia subarcuata, 

 , var.* 



Orthocera,s cylindraceum ?, Flem. 

 Littorina scotoburdigalensis, Eth. 

 Loxonema scalaroidea, Thill. 

 Macrocheilus striatulus, sp. nov. 

 Murchisonia quadricarinata, M^ Coy. 

 Naticopsis plicistria, Thill. 

 Aviculopecten granosus, Thill. 

 Myalina modioliformis, Brown. 

 Nucula lineata. Thill. 

 Sanguinolites abdensis, Eth. 



subplicatus, sp. nov. 



Schizodus Salteri, Eth. 

 Lingula mytiloides, &ow. 



Oythere Jonesiana, KirJcby. 



sequalis, J. ^ K. 



Kirkbya spiralis, J. ^ K. 

 Leperditia Okeni, Milmt. 

 Spirorbis globosus, M' Coy. 



■ helicteres, Salter. 



sp. 



Ehizodus Hibberti, Ag. 



Lepidophyllum, 



Wood in drifted fragments. 



* This form differs somewhat from typical specimens of B. subarcuata in the 

 trilobate character of the valves, and, possibly, when thoroughly known, may 

 prove to be distinct from that species. 



