58 TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 



The leaves when detached from the stem are known as 

 Lepidophyllum, some of which are of considerable size, and are 

 indistinguishable in general appearance from those of Lepido- 

 dendroii. 



Internal Organization. — The internal structure of Lepidophloios 

 is similar in type to that of Lepidodendron. In fact, all the 

 Lepidophloios, with the exception of the Lepidophloios described 

 by the late Sir William Dawson,^ were first placed in the genus 

 Lepidodendron. To Lepidophloios belong the Lepidodendron 

 /nliginosuvi, Williamson, - and the Lepidodendron Wunschianum^ 

 of the same author. Not only are Halonial branches of Lepi- 

 dophloios fuliginosus known, but Messrs. Cash and Lomax 

 showed me a specimen having the structure of Lepidodendron 

 Jidiginosuvi on which the characteristic leaf-scars of Lepi- 

 dophloios were exhibited.* The Lepidodendron Wunschianum, 

 Will.,'"' from Arran, is also seen to be a Lepidophloios from its 

 possessing Halonial branches. " The first described specimens of 

 Lepidophloios fidiginosus were identified as Lepidodendron 

 Harcourtii, but this was corrected by Professor Williamson in 

 his Memoir No. XIX., where the name oi fuliginosus is given to the 

 plant. Irrespective of other distinguishing points, Lepidodendron 

 (Lepidophloios) fuliginosus is known at first sight from Lepi- 

 dophloios Harcourtii by the constant occurrence of the beauti- 

 fully-preserved inner bark, while the corresponding structure in 

 Lepidodendron? ( Lepidophloios ) Harcouj'tii is invariably destroyed. 



Last year Messrs. Seward and Hill communicated a paper to 

 the Royal Society of Edinburgh, in which they describe what is 

 probably the finest specimen of a Carboniferous Lycopod yet 

 found. It was collected by Mi\ J. Kerr, Edinburgh, at Dalmeny 

 Railway Cutting, Linlithgowshire. The stem is 13 inches in 



1 Lepidophloios Acadianus, Dawson. Quart. Journ. Geel. Soc, 1S65, 

 p. 163, PL X., fig. 50. This species is now recognised as the same as the 

 Lepidophloios laricinus, Sternb. 



- First described imder the name of Lepidodendren Harcourtii in error. 

 Mem. II., Phil. Tram., 1872; Mem. XI., Phil. Trans., 1881. Under name 

 of Lepidodendron fuliginosum, Mem. XIX., Phil. Trans., 1893. 



3 Phil. Trans., Mem. X., 1880. 



* Cash and Lomax, Eept. Brit. Assoc. Leeds, 1890, p. 810. 1891. 



= Memo. X., Phil. Trans., 1880; Memo. XII., ibid., 1881. 



« ]\Icmo. XII., Phil. Trans., 1881. 



