592 MR ROBERT KIDSTON ON 



Odontopteris, Brongt. 

 Odontopteris Lindleyana, Sternb. 



Odontopteris Lindleyana, Sternb., Ess. flore monde prim., vol. ii. p. 77. 



Odontopteris Lindleyana, Kidston, Trans. Roy. Soe. Edin., vol. xxxiii. p. 363. 



Odontopteris obtusa, L. and H. [not Brongt.), Fossil Flora, pi. xl. 

 (?) Odontopteris heterophylla, Lesqx., Rep. Geol. Survey of Illin., vol. ii. p. 433, pi. xxxviii. figs. 2-5. 

 (?) Odontopteris heterophylla, Lesqx., Coal Flora, vol. i. p. 129, pi. xxii. fig. 6. 



Transition Series (Lower Pennant Rocks). 



Locality. — Pochin Pits, near Tredegar. 

 Horizon. — Pontygwaith Seam. 



Note. — This species was tolerably plentiful in the shale I examined at Pochin Pits. 

 Lindley Hutton's specimen came from Leebotwood, and it also occurs in the Upper Coal 

 Measures, Radstock, Somerset. 



Mariopteris, Zeiller. 

 Mariopteris muricata, Schl, sp. 



Mariopteris muricata, Zeiller, Bull. Soe. geol. d. France, 3 e s£r., vol. vii. p. 92. 

 Mariopteris muricata, Zeiller, Veget.foss. d. terr. houil., p. 71, pi. clxvii. fig. 5. 

 * Mariopteris muricata, Kidston, Trans. Roy. Soe. Edin., vol. xxxvii. p. 323. 

 Pecopteris muricata, Brongt., Hist. d. veget. foss., p. 352, pi. xcv. figs. 3-4, pi. xcvii. 

 Pecopteris nervosa, Brongt., Hist. d. veget.foss., p. 297, pis. xciv., xcv., figs. 1-2. 



Middle Coal Measures (White Ash Series). 



Locality. — Bwllfa Dare Colliery, Aberdare. 



Horizon. — 9 feet Seam. 

 Locality. — Ysguborwen Colliery. 



Horizon. — No. 2 Bass (No. 2 Yard Coal). 

 Locality. — Risca, Monmouth. 



Horizon. — Black Vein (9 Feet). 

 Locality. — Gadlys Colliery, Aberdare. 



Horizon. — (?). 

 Locality. — Cribbwr Brick Works, near Aberkenfig, Llynvi Valley. 



Horizon. — Fireclay Bed (Below 9 Feet Seam). 

 Locality. — Beaufort. 



Horizon. — (?). 



