3 YORKSHIRE NATURALISTS' UNION. 



Phytolithtis parmatus. P. 286, pi. vi., fig. i, pi. vii., fig. i. 

 That on pi. vi. fig. i is a Calaniitina, the Cydocladia 

 major Lindley and Hutton. The specimen figured on pi. 

 vii. fig. I is a large specimen of Sigillaria discophora. I 

 originally regarded this figure of Steinhauer as referable to 

 Lepidode II droit velt/iehnianum, but since working up the 

 Yorkshire Fossil Plants, have seen many specimens from 

 Low Moor (Low Moor and Shelf being Steinhauer's 

 localities), all of which are referable to Sigillaria discophora, 

 Konig sp. 



Phytolithus reticulatus. P. 291 (not figured). 

 Low Moor and Shelf. 



Phytolithus martini. P. 291 (not figured). 



As he gives as a reference to this fossil Martin's Petri- 

 ficata Derbiensia, pi. xiv, fig. 2 (1809), Phytolithus martini 

 has been a Lepidodendroid branch. 



Phytolithus transversus. P. 293, pi. v.. fig. 3. 



This is a small fragment of Artisia. 

 Phytolithus dawsoni. P. 293, pi. i., fig. 7. 



A decorticated Sigillaria. 

 Phytolithus tessellatus. P. 295, pi. vii., fig. 2. 



A badly preserved specimen of Sigillaria which ' does 

 duty ' as the type of Sigillaria tessellata, but whose true 

 characters can only be learnt from the figures of subsequent 

 authors ! especially from those of Brongniart, who is then 

 practically author of the species. 



IL Antediluvian Phytology.— By Edmund Tyrell 

 Artis, London, 1825.* This work is entirely devoted to the 

 description and figuring of Yorkshire Carboniferous Plants and 

 contains twenty-four well-executed plates. Since this work was 

 written much alteration has taken place in the opinions and 

 classification of fossil botany. The plants figured by Artis are: — 



* The Introduction bears the date of 1825, but the Title Page that of 1S38. 



Geol. Trans. Y.N.U., 188S (pub. 1S90). 



