CARBONIFEROUS. 73 



? ? Diplothmema Schillingsii. 



Stur, Culm Flora, heft 2, pp. 230 & 253, pi. xv. fig. 6. 

 Sphenopteris obtusiloba. 



Sauveur, Veg6t. Foss. de la Belgique, pi. xvi. fig. 3. 

 Horizon. Coal Measures. 

 Locality. British. Lanarkshire : Airdrie. 



Sphenopteris adiantoides, Lindley & Hutton. 



Sphenopteris adiantoides. 



Dawson, Quart. Journ. Geol. Soc. vol. xv. p. 69, 1859. 

 Lindley & Hutton, Foss. Flora, vol. ii. pi. cxv. 

 Schimper, Traite d. Pale"ont. Veget. vol. i. p. 401. 



Cyclopteris adiantoides. 



Bronn, Index Palaeont. p. 377. 



Sternberg, Vers. ii. p. 133. 

 Diplothmema adiantoides. 



Stur, Culm Flora, heft 2, p. 230. 

 Adiantites concinnus. 



Goppert, Syst. Fil. Foss. p. 226. 

 Cyclopteris concinna. 



Unger, Synop. Plant. Foss. p. 56. 

 Genera et Species, p. 101. 



Sphenopteris obtusiloba. 



Sauveur, Veg6t. Foss. de la Belgique, pi. xxv. fig. 1. 



Horizon. Coal Measures. 



Locality. British. Durham : Jarrow Colliery. 



Sphenopteris Zobelii, Goppert, sp. 



Sphenopteris Zobelii. 



Schimper, Traite d. Palaeont. Veget. vol. i. p. 404. 

 Hymenophyllites Zobelii. 



Bronn, Index Palaeont. p. 602. 



Giebel, Deutschl. Petrefacten, p. 46. 



Goppert, Syst. Fil. Foss. p. 260, pi. xxxvi. figs. 3, 4. 



Gatt. d. Foss. Pflanzen, lief. 3 u. 4, p. 55, pi. v. fig. 3. 



Stur, Verh. d. k. k. Geol. Eeichsanst. p. 300, 1874. 



Unger, Synop. Plant. Foss. p. 69. 

 Genera et Species, p. 129. 

 Rhodea Zobelii. 



Sternberg, Vers. ii. p. 110. 

 Diplothmema Zobelii. 



Stur, Culm Flora, heft 2, p. 230. 



Morph. u. Syst. d. Culm u. Carbonfarne, p. 194. 



Remarks. The specimen from Dalkeith shows very well the characters of 

 this species. Probably it only represents a lateral pinna, with a similar mode 

 of growth to the pinnae of Mariopteris latifolia and M. nervosa, as figured by 

 Zeiller (Bull. Soc. G6ol. de France, 3 e se~r. vol. vii. pp. 4 & 5.) 



The fossil shows a portion of a secondary rachis about 2^ inches long and 

 the tenth of an inch broad. At its summit it bifurcates, the two forks 

 forming a very obtuse angle. The leafbearing pinnae spring from the two 

 arms of the bifurcation ; these latter are flexuous and strongly geniculate where 

 the pinnae are given off. Neither of the arms of the bifurcation is complete, 

 but the more perfect of the two is 5 inches long. The ultimate pinnae are 



