10 YORKSHIRE NATURALISTS UlSflON. 



varians and perhaps its var. schiltzei {^Calainites schiitzei 

 Stun). 



Hober Quarry, near Wentworth. 



Hydatica columnaris Artis. PI. v. 



I do not think this differs from the fossil given on pi. i. 

 under the name of Hydatica prostrata. 

 Elsecar, near Wentworth. 



Calamites pseudo-bambusia Artis. PI. iv. 



Probably also referable to one of the protean forms of 

 Calamites ( Calamitina) varians, but from such a specimen 

 as that figured here satisfactory determinations are all but 

 impossible. 



Quarry at Leabrook, near Wentworth. 

 Filicites osmundce Artis. PI. vii. 



Now the Neuropteris osmundcs Artis sp. 

 Elsecar. 



Sternbergia transversa Artis. Pi. viii. 



Pith casts of Cordaites stems. 



Although this is the first description of these fossils, the 

 genus Sternbergia had been previously employed (though 

 this was evidently unknown to Artis), so Sternberg, to 

 obviate the mistake, re-named these fossils Artisia.t The 

 plant is therefore distinguished now as Artisia transversa 

 Artis sp. 



Leabrook Quarry. 



Rhytidolepis fibrosa Artis. PI. ix. 



A decorticated Sigillaria which cannot be specifically 

 determined. 



Rawmarsh, near Rotherham. 



Ficoidites verrucostis Artis. PI. x. 



The Stigmaria ficoides Sternb. sp. 

 Elsecar, near Wentworth. 



\ Sternberg. Ess. FI. Mond. Prim., ii., fasc. y-S, p 192, 1838. 



Geol. Trans. V.N.U., iS88 (pub. 18 



