106 DR ROBERT KIDSTON ON THE 



alpina and Odontopteris britannica Gutbier,* with which latter species my specimens 



agree more in size. 



At present it seems impossible to settle this point, but, as I have figured f the 

 British species under discussion, palaeobotanists will easily recognise the plant which 

 I have referred to Odontopteris alpina, and which species is of older date than 

 Odontopteris britannica, Gutbier, sp., with which it may possibly be synonymous. 



Potonie unites the Odontopteris genuina Grand' EuryJ and the Odontopteris 

 nervosa and Odontopteris densifolia Fortaine and White § with Odontopteris alpina ; 

 but these are certainly not the British plant, nor do they appear to be similar to the 

 species he himself gives at fig. 1, under the name of Odontopteris alpina. 



Horizon and Locality. — Ten -foot Ironstone Measures : Clayscroft Openwork, 

 Coseley, near Dudley. 



Neuropteris Brongniart. 



Neuropteris heterophylla Brongt. 

 PI. VII. figs. 3, 4. 



1822. Filicites {Neuropteris) heterophyllus, Brongt., Class, d. veget. foss., p. 33, pi. ii. figs. 6a and Qb. 



1830. Neuropteris heterophylla, Brongt., Hist. d. veget. foss., p. 243, pi. lxxi. and pi. lxxii. fig. 2. 



1886. ,, ,, Zeiller, Flore foss. bassin houil. d. Valen., p. 261, pi. xliii. figs. 1, 2; 



pi. xliv. fig. 1. 

 1904. „ ,, Kidston, Phil. Trans., ser. B, vol. cxvii. p. 1, pi. i. figs. 1-9 ; text-fig. 1, 



p. 3. 

 1911. „ ,, Kidston, Mem. Museeroy. d'hist. nat. d. Belgique, vol. iv. p. 75, text- 



figs. 8, 9 (p. 72), fig. 10 (p. 73), fig. 11 (p. 74). 

 1830. Neuropteris Loshii, Brongt., Hist. d. veget. foss., p. 242, pi. lxxii. fig. 1, pi. lxxiii. 

 1869. ,, ,, Roehl, Flora d. Steink. Westph., p. 37, pi. xvii. 



1830. Cyclopteris trichomanoides, Brongt., Hist. d. veget. foss., p. 217, pi. lxi. bis, fig. 4. 



Remarks. — Since preparing the original description of the fructification of 

 Neuropteris heterophylla, \\ some additional specimens have been collected by Mr 

 H. W. Hughes, and two of these are described here, as they are more perfect than 

 those first discovered. IF 



That shown on PI. VII. fig. 3 has probably reached maturity. It is narrow oval, 

 with a somewhat flattened base by which it is attached to the expanded apex of the 

 rachis, from whose side springs a pinnule showing the typical form and nervation 

 of the species. The cupular structure at the base of the seed is not so well seen 

 in this example as in some of those previously figured, and especially those at figs. 

 5 to 8 of the original paper. 



In the specimen here figured the stalk terminates in a solid conical expansion, 



* Gutbier, A bdr. u. Verstein. d. Zwick. Schwarz, p. 68, pi. ix. figs. 8-11 ; see also Gkinitz, I.e., p. 21, pi. xxvi. 

 figs. 8, 9. t hoc. cit. 



% Flore carbon, du depart, de la Loire, p. 115, 1877. Zeiller, Flore foss. terr. houil. d. Commentry, p. 219, pi. xxiv. 

 figs. 1, 3 ; pi. xxv. figs. 1, 2 ; pi. xxxi. fig. 1. 



§ Fortaine and White, Permian Flora, pp. 52 and 54, pi. x. figs. 1-3, 1880. || Phil. Trans., I.e., p. 1. 



1 These two specimens are figured in Kidston, Mem. Musee roy., I.e., text-figs. 8, 9. 



