o/^Ulodendron to Lepidodendron, &c. 249 



Under PacJiypJilmus tetragonus, Goppert * appears to have 

 included portions of different plants. His tig. 5 cannot be 

 distinguished from a Ulodendroid scar of Lepidodendron Vel- 

 theimianum^ but his other figures do not seem to belong to 

 this plant. 



Some writers have proposed the union of Lepidodendron 

 corrugatum, Dawson, \N\t\\ Lepidodendron Veltheimianum] and 

 " so closely does the last species resemble Lepidodendron 

 corrugatum^ that Schimper and other palseobotanists conver- 

 sant with the protean forms of this species, and knowing ours 

 Only bj imperfect figures, may well be excused for regarding 

 them as identical" t- As mentioned in the above quotation, 

 some figures of Lepidodendron corrugatam are scarcely distin- 

 guishable from Lepidodendron Veltheimianum ; but, through 

 the kindness of Sir Wm. Dawson, who has forwarded me a 

 series of specimens representing his plant at different stages 

 of growth, I have been able to compare them with well- 

 preserved examples of Lepidodendron Veltheimianum^ and 

 feel convinced that Lepidodendron Veltheimianum, Sternberg, 

 and Lepidodendron corrugatum, Dawson, cannot be united. 



The three figures given by Stur in his ' Culm Flora,' 

 pi. xxxix. figs. 1 a, 1 5, and 2, do not belong to this species, 

 but to Sigillaria Taylori, Carruthers, sp. 



Localities and Horizons. 



Scotland — Carboniferous-Limestone Series. 



Ayrshire : Spittal Hill, Craigie Range, 3| miles S.E. of 

 Kilmarnock {Rev. D. Landshorough) . 



Lanarkshire : Shale above Calderwood Cement-stone, East 

 Kilbride {A. Patton) ; Possil Ironstone, Keppock 

 Hill, near Glasgow [J. Bennie) ; Carluke {collection 

 of British Museum). 



Linlithgowshire : Roof of Easter Main Coal, Bo'ness {H. 

 M. CadelT) ; Shale above Ii'onstone, No. 6 Pit, 

 Grange, Bo'ness {H. M. Cadell) ; Brown Ironstone, 

 Bo'ness {H. M. Cadell) ; Blaes, 20 feet above 

 Lower Ironstone, No. 6 Pit, Grange, Bo'ness {££. 

 M. Cadell). 



Midlothian : Cowden, near Dalkeith {D. Grieve) ; Burgh- 

 lee Pitt, near Loanhead. 



Stirlingshire : Todholes, Bannockburn, about 400 yards 

 above Bridge on Denny Road ; Raploch Quarry, 

 near Stirling {G. Macdougall). 



* Syst. fil. fos3. p. 468, pi. xliii. 



t Dawson, Foss. Plants of Lower Carbon, and Millstone-Grit Forma- 

 tions of Canada, p. 21. 



