76 MR ROBERT KIDSTON ON THE 



Horizon and Locality. — Great Eow Coal Rock. Fenton and Longton. 



,, „ Shale below Little Cannel Row Coal. Clan way Colliery, 



Tunstall. 



Lower Coal Measures ( Upper Series). 



Horizon and Locality. — Bowling Alley Rock. Weston Coyney Colliery, Longton. 

 ,, ,, Holly Lane Coal. Bucknall. 



,, „ 2 yards below Hard Mine Coal. Weston Coyney Colliery, 



near Longton. 



Dictyopteris, Gutbier. 

 Dictyopteris Miinsteri, Eichwald, sp. 



Dictyopteris Miinsteri, Zeiller, Flore foss. d. bassin liouil. d. Valenciennes, p. 294, pi. xlix. figs. 1-5. 

 Dictyopteris Miinsteri, Kidston, Trans. Roy. Soc. Edin., vol. xxxiii. p. 361, pi. xxi. fig. 6. 

 Odontopteris Miinsteri, Eiclnvald, Die Unvelt Russlands, heft i. p. 87, pi. iii. fig. 2, 1840. 

 Dictyopteris Hoffmanni, Roemer, Palceontographica, vol. ix. p. 29, pi. vii. fig. 3, 1862. 



Middle Coal Measures. 



Horizon and Locality. — Peacock Marl. Marl Pit, Fenton Low. 



,, ,, Knowles Rock. Stafford Iron and Coal Company, Fenton. 



Dictyopteris obliqua, Bunbury. (Plate, fig. 3 and 3a.) 



Dictyopteris obliqua, Bunbury, Quart. Journ. Geol. Soc, vol. iii. p. 427, pi. xxi. fig. 2, 1847. 

 Dictyopteris obliqua, Lesqx., Coal Flora, vol. i. p. 146, pi. xxiii. figs. 4-6. 

 Dictyopteris sub-Brongniarti, Grand' Eury, Flore carb. d. Depart, de la Loire, p. 379, 1877. 

 Dictyopteris sub-Brongniarti, Zeiller, Expl. carte geol. d. France, vol. iv. p. 55, pi. clxv. figs. 1-2, 

 Dictyopteris sub-Brongniarti, Zeiller, Flore foss d. bassin liouil. d. Valenciennes, p. 290, pi. xlix. fig. 6 ; 



pi. 1. figs. 1-2. 

 Dictyopteris sub-Brongniarti, Renault, Cours d. botan. foss. Troisieme Annee, 1883, p. 176, pi. xxx. 



figs. 3-4. 

 Dictyopteris Brongniarti, Boulay {not Gutbier), Terr, liouil. du nord de la France, pp. 35 and 74, pi. iv. 



fig. 2. 

 Dictyopteris Brongniarti, Achepohl (not Gutbier), Niederrh. Westfal. Steinlcohl, p. 71, pi. xxi. fig. 9. 

 Dictyopteris Brongniarti, Kidston, Catal. Palaioz. Plants, p. 103 (Excl. ref. D. Brongniarti). 



Remarks. — Dictyopteris obliqua, Bunbury, occurs sparingly in the Potteries Coal 

 Field, and the only specimens I have seen are isolated pinnules. The pinnules in this 

 species are articulated to the rachis, and appear to have fallen off very easily, as in Neu- 

 ropteris gigantea, with which, in the form of its pinnules, Dictyopteris obliqua is almost 

 identical. It may therefore be more common than at present suspected, for unless the 

 netted nervation be observed, by which Dictyopteris is distinguished at first sight from 

 X> uropteris, it might be very easily passed over for Neuropteris gigantea. 



