486 Mr. R. Kidston on some Fossil Plants 



and leaves, which apparently belong in part to Lepidodendron, 

 Lepidophloios, and Sig Maria. 



Localities. Pit, Airdrie. Bent Colliery, about 1^ mile 

 E. of Bothwell. 



Lepidostrobus, Brongniart. 



Lepidostrobus variabilis, Lindley & Hutton. 



Lepidostrobus variabilis, Lindley and Hutton, Fossil Flora, vol. i. 

 pis. x., si. 



Remarks. Under this name are most probably included 

 the cones of different species of Lycopods. 



Locality. Blackband, Airdrie ; Bent Colliery, about 1£ 

 mile E. of Bothwell. 



Sigillaria, Brongniart. 



Sigillaria discophora, Konig, sp. 



Lepidodendron discophorum, Konig, Icones fossilium sectiles, pi. xvi. 



fig. 194(1825). 

 Ulodendron majus, Lindley & Hutton, Fossil Flora, vol. i. pi. v. (excl. 



ref.). 

 Ulodendron minus, Lindley & Hutton, Fossil Flora, vol. i. pi. vi. 



(excl. ref.). 



Remarks. Ulodendron minus, L. & H., is only a smaller 

 specimen of their Ulodendron majus, and both are similar to 

 the plant described by Konig as Lepidodendron discophorum. 



It is now known that certain Ulodendra, such as U.parmatum, 

 Carruthers (=£7. commutation, Schimper), belong to Lepido- 

 dendron Veltheimianum, Sternberg, and there are other Lepi- 

 dodendra which also bear Ulodendroid scars. But in addition 

 to Lepidodendra, some Clathrarian Sigillaria} were likewise 

 provided with Ulodendroid scars, of which Sigillaria disco- 

 plwra is an example. Ulodendroid scars also occur in the 

 genus Rhytidodendron, Boulay. The presence of these large 

 scars cannot then be regarded as a generic character. The 

 leaf-scars only afford the necessary comparative points for 

 the classification of these so-called Ulodendroid Lycopods, and 

 the leaf-scars of Sigillaria discophora are essentially those of 

 a Clathrarian Sigillaria. 



Locality. Pit, near Airdrie. 



Sigillaria notata, Steinhauer, sp. 



Sigillaria notata, Brongniart, Hist. d. veget. foss. p. 449, pi. cliii. 



tig. 1. 

 Phytolithus notatus, Steinhauer, Amer. Phil. Trans, vol. i. pi. vii. fig. 3. 



Remarks. This collection contains only one small speci- 



