Vol. 70.] FOSSIL FLORA OF THE KENT COALFIELD. 73 



being: only two records — one from the Middle Coal Measures 

 of Yorkshire, and the other from the Lower Coal Measures of 

 Lanarkshire. The two fragments of pinnae, figured in PI. XI, 

 fig. 1, are much narrower in proportion to their length than in 

 Andra's type, and agree more closely with the specimen figured by 

 Prof. Zeiller. In the venation, however, and especially in the loose 

 nature of the lateral nervation and the comparative fewness of 

 the anastomoses, the Kent specimen appears to agree closely with 

 the Westphalia n type. 



PECOPTEKIS Brongniart, 1822. 



' Sur la Classification & la Distribution des Vegetaux Fossiles ' Mem. Mus. 

 Hist. Nat. vol. viii, p. 233. 



1. Pecopteeis abboeescexs ? (Schloth.). (PL XI, figs. 2 & 7.) 



1820. Filicites arborescens Schlotheim, ' Petrefacten-Kunde ' p. 404. 

 1833-34. Pecopteris arborescens Brongniart, ' Histoire des Vegetaux Fossiles ' 



vol. i, p. 310 & pi. cii ; also pi. ciii, tigs. 2-3. 

 1890. Pecopteris (Asterotheca} arborescens Zeiller, ' Bassin Houiller & 



Permien d'Autun & d'Epinac ' fasc. ii, pt. 1, p. 43 & pi. viii, iig. 1. 



This species lias hitherto been generally regarded as confined to 

 the Upper Coal Measures. In a previous paper 1 I doubtfully 

 referred to it a specimen from the Transition Coal Measures of 

 Waldershare. I now assign, but also with some doubt, the 

 pinnae figured in PI. XI, figs. 2 & 7, to this same species. Three 

 examples in all occur, but in none of them is the nervation quite 

 clearlv marked, although there are indications that the lateral veins 

 were probably simple. The form of the pinna, as a whole, as well 

 as the size and shape of the pinnules, their erect and regular nature, 

 and the rounded apices, are features which all resemble those of 

 P. arborescens (Schloth.), and I am not aware of any other 

 species with which they may be more closely compared. Yet at 

 Goodnestone these fronds are associated with a Middle Coal- 

 Measure flora. 



2. Pecopteeis ceexulata Brongniart. (PL XI, fig. 3.) 



1832-34. Pecopteris crenulata Brongniart, 'Histoire des Vegetaux Fossils' 



vol. i, p. 300 & pi. lxxxvii, fig. 1. 

 1886-88. Pecopteris crenulata Zeiller, ' Flore Fossile du Bassin Houiller de 



Valenciennes ' p. 192 & pi. xxv, figs. 1-4. 



This species is rare in Britain, and has previously been recorded 

 only from the Upper Coal Measures of the Badstoek-Bristol 

 Coalfield. At Barfreston it occurs in the Transition Coal Measures. 

 Prof. Zeiller (see above) has also figured it from the same horizon 

 in the Pas-de-Calais Coalfield, where it is a characteristic plant. 

 In Kent it also occurs in the Middle Coal Measures. The out- 

 standing features of this species are the comparatively long and 

 decurrent pinnules and the crenulate margin. 



1 Arber (1909) p. 28. 



