Mr. 11. Kidston on British Carboniferous Lijcopods. G3 



tain that Sigillaria Menardi^ Lesqx. (not Brongn.)"'^, wliich 

 Zeiller unites with U. majus, is likewise referable to Sic/, 

 discophora {=U. minus, L. & H.). The type of U. majus 

 appears to be lost, but the counterpart of the type of U. minus 

 is still preserved in the Ilutton Collection, Newcastle-on- 

 Tyne, and on the careful examination of this my identifica- 

 tions have been made. 



HI. BOTIIRODENDRON, L, & H. 



Buthrodemhon, L. & H., Fossil Flora, vol. ii. p. 1 (IS:!?,). 

 li/ii/tidodendroH, Boulay, Ije terrain lioiiiller du uord de la France et 

 ses vegetaux fossiles, p. 39 (187(3, Lille). 



In 1885 I recorded the occurrence of Rliytidodendron 

 minutifoUum, Boulay, from Scotland, and regarded the genus 

 as distinct from all others ; but to M. Zeiller we are indebted 

 for showing that Rliytidodendron, Boulay, is none other than 

 Bothrodendron, L. & II. To the defective descriptions of 

 Lindley and Hutton must be ascribed the cause of this genus 

 being so imperfectly known ; and had it not been for the 

 discovery of an original specimen, communicated by Hut- 

 ton to the Museum of Natural History, Paris, the cloud 

 that enveloped this genus might have hung over it much 

 longer f. 



In M. Zeiller's memoir, to which I have already referred, 

 he figures stems and branches of Dotlirodendron punctatum^ 

 the latter having their foliage attached. Recently I have 

 met with specimens of B. punctatuni as also with additional 

 examples of B. minutifoHum in Britain. The latter species I 

 have found in several new localities, and it is represented by 

 stems and branches with their foliage attached. B. puncta- 

 tuni I have only yet seen from the Kilmarnock Coal-field, 

 and for specimens of it I am again indebted to the Rev. D. 

 Landsborough and to Mr. Blackwood, Kilmarnock. 



The leaf-scars in this genus are very small and provided 

 with three punctiform cicatricules. On the young growing 

 branches the leaf-scars of some of the species are close and 

 surrounded hy & Lepidodendroid-Uke 'Afield," but this entirely 

 disappears on the larger stems where the leaf-scars are distant ; 

 the surface of the bark between the leaf-scars is beautifully 

 ornamented by delicate lines and granulations. 



* Geol. Survey of Illinois, ii. pi. xliii. 



t 1 am greatly indebted to M. Zeiller for figuring at my request the 

 authentic specimen of Bothrodendroa puncfatum, L. & H., which had 

 been presented to the Museum d'histoire uaturelle by Hutton and to 

 which reference has been made (Zeiller, I. c. pi. viii. tig. 1). 



