LTTDWIG BOHEMIAN COAL-BASINS. 27 



hausen mentions, in his work already quoted, Neuropteris obovata, 

 Sternb., and N. rubescens, Sternb. 



Herr Corda, Graf Sternberg, and Herr von Ettingshausen have 

 investigated the flora of the Radnitz Basin, from which about 138 

 species have been determined by them ; of these, 82, or 60 per cent., 

 are peculiar, while the remaining 56, or 40 per cent., occur also in 

 other districts. Four species are found also in Devonian rocks, and 

 two in the Rothliegende. 



In the Miroschau Basin Herr von Ettingshausen has found Neuro- 

 pteris acutifolia, Brongn., and N. obovata, Sternb. ; and in the Basin 

 of AEerklin Aletho-pteris Sternbergi, Brongn. 



Northward from Senetz, near Lubna, in the Rakonitz Basin, and 

 probably in the lower portion of the Carboniferous formation, Herr 

 Stur has found Catamites communis, Ettingsh., Sphenopteris rut&folia, 

 Gutb., Stigma ria Jicoides, Brongn., Flabellaria Sternbergi, Ettingsh., 

 and Noeggeratliia foliosa, Sternb. ; but the author remarks that these 

 few remains are scarcely sufficient to determine the age of the beds 

 from which they were obtained. 



The upper part of the Coal-formation in the Rakonitz Basin is 

 seldom coal-bearing ; but at the Belschanka, near the Bischlaw mill, 

 there is a bed of coal 3 feet thick, the roof of which is composed of 

 white and yellow shale containing many Eern-remains, as Neuropteris 

 acutifolia, Brongn., Cyclopteris rhomboidea, Ettingsh., Sphenopteris 

 Haidingeri, Ettingsh., Asplenites elegans, Ettingsh., Asplenites Reussi, 

 Ettingsh. Lepidodendra and Ccdamites are comparatively rare ; but 

 Noeggeratliia foliosa, Sternb., is somewhat abundant. 



Nearer Bakonitz are two coal-beds, the beds above which are rich 

 in Lepidodendron obovatum, Sternb., L. dichotomum, Sternb., and 

 Sigillaria elongata, Brongn. The shale above the upper coal-seam 

 contains likewise Na^ggerathia foliosa, Asplenites elegans, A. Reussi, 

 and Cyclopteris rhomboidea. 



The beds in the Eothliegende contain no Plants ; sometimes, how- 

 ever, pyritized Wood is found, or brandschiefer with Eish-remains, 

 — namely, teeth of Diplodus, sp., Xenacantlius Decheni, Beyr., and 

 Pygopteris, sp. ; scales and fins of Acanthodes gracilis, E. Romer; and 

 head-bones and other remains of Palceoniscus. All the coal-beds 

 have brandschiefer above them. 



The author gives the following summary of the characters of the 

 Basin of Bakonitz : — 



1. This basin is similar to those of Pilsen and Radnitz in being 

 divided into several coal-bearing troughs, separated by barren ridges. 



2. These small troughs are richest in coal in the southern and 

 south-western portions of the basin, while those in the eastern can 

 scarcely be described as coal-bearing. 



3. The lower portion of the Coal-formation contains the thicker 

 beds ; in them Sigillaria, Lepidodendron, and Calamites predominate. 



4. The upper portion of the formation includes coal-beds in which 

 are Noeggerathia and Eerns similar to those from Stradonitz, and 

 equally abundant. 



5. In the Carboniferous formation in the northern portion of the 



e2 



