204 Proceedings of the Royal Physical Society. 
Lepidodendron ophiurus, Brongt. 
Lepidostrobus variabilis, L. and H. \ 
Sigillaria camptotenia, Wood sp. (=. monostigma, 
Lesqx.). 
Cordattes sp. 
Trigonocarpus Parkinsoni, Brongt., forma oliveformis, 
L. and H. 
“ Alge or rootlets,” Binney and Kirkby, loc. cit., pl. vi. 
Note.—These may possibly be the divided 
fruiting branchlets of a Calymmatothecous fern. 
They are not Algz or rootlets. 
Bed 33: 
Neuropterts rarinervis, Bunbury. 
Bed 47: | 
Calamites sp. 
Neuropteris Scheuchzeri, Hoftn. 
ss rarinervis, Bunbury. 
Lepidodendron, cf. rumosum, Sternbg. 
Lepidophyllum lanceolatum, L. and H. 
Trigonocarpus Parkinsont, Brongt., forma oliveformis, 
L. and H. 
The distinctly Middle Coal-Measure /acies of these plants 
will be fully seen when compared with the plants from the 
same Measures of the English Coal Fields, where this division 
is much more developed. 
In Mr Peach’s Generalised Index (given ante, p. 196), he 
suggests that these red sandstones and shales are the probable 
equivalents of the Pennant Grit of England. This, however, 
cannot be their position, for the Upper Pennant of the South 
Wales Coal Field is of Upper Coal-Measure age, and the 
Lower Pennant of the same area forms a Transition Series, 
overlying the Middle Coal-Measures ; and though the actual 
age of the Pennant Rocks of Somerset cannot be accurately 
determined, they overlie the Transition Series of Somerset, 
and are therefore considerably above the Middle Coal- 
Measures. 
Lower CoAL-MEASURES. 
“ Lower or Black Group ” of Mr Peach’s Section. “ Coal- 
Measures d°” of the Geological Survey of Scotland. 
