L072 DR R. KIDSTON, MR T. C. CANTRILL, AND MR E. B. L. DIXON. 



.Museum, to which it was presented a short time ago by the Geological Society 

 of London.* 



Rhacopteris dubia L. & H. sp. 



1835. Otopterisl dubia, L. & H., Fossil Flora, p. 191, pi. cl. 



1892. Rhacopteris duhia, Kidston, Proc. Boy. Phys. Soc. Edin., vol. xi, p. 238, pi. ix, figs. 1, la. 



This specimen was " procured by Mr Murchison from the sandstone of the 

 Knowlsbury Coal Field." It is preserved in a fine-grained, buff-coloured sandstone. 

 Rhacopteris dubia is also only represented by the type specimen, and is now con- 

 tained in the collection of the Geological Department of the British Museum, having 

 been received from the Geological Society of London, t 



A third specimen was described by Lindley and Hutton from the " Knowlsbury 

 Coal Field," the Sigillaria Murchisoni. \ It is now also in the collection of the 

 Geological Department of the British Museum, but it is so badly preserved that it is 

 impossible to obtain from it any satisfactory specific characters. § 



Specimens collected by Mr Dixon. 



Locality. — Knowbury Brickworks, Knowbury. 



Horizon. — Within 200 yards above Four Foot Coal. From almost the highest 

 beds in the coal field. 



Sphenopteris Laurenti Andrae. 



Locality. — Penny's Pit, near Collybrook Cottage, Knowbury. 

 Horizon. — -Immediately above Great Coal. 



Sphenopteris obtusiloba Brongt. 

 Sigillaria sp. (Clathrate). . 



Horizon. — Probably a few feet above Great Coal, but may be 100 yards above it. 



Sphenopteris obtusiloba Brongt. 

 Pecopteris Miltoni Artis sp. 

 Mariopteris muricata Sehl. sp. 

 Neuropteris sp. 

 Lepidophyllum sp. 



Locality.- — Clee Hill Granite Company's Quarry, near Craven Place. 

 Horizon — Measures above Dolerite, above Great Coal. 



Neuropteris gigantea Sternb. 



Sigillaria sp. 



Artisia approximata Brongt. sp. 



* No. G.S. 5195a. t No. G.S. 5093a. 



X Fossil Flora, vol. ii, pi. cxlix, 1835. § No. G.S. 5231. 



