370 Proceedings of the lloyal PJiysicrtl Societij. 



PI. Cxiv. HiPPUKITES GIGANTKA, L. and H. 



Locality. — Jarrow Colliery. 



Horizon. — Lower Ooal-Measures. 



Remarks. — The type is preserved in the " Hutton Collec- 

 tion." The leaves appear to spring from the nodes, not as 

 teeth of a sheath as represented in the plate, but as free and 

 independent organs placed closely together. The specimen 

 is similar to that figured by Weiss as " Calamites sp.," from 

 the Bruckstrasse Mine, near Langendreer, Westphalia.^ The 

 plant figured by Lindley and Hutton may possibly be 

 Calamitina varians, var. insignis, Weiss.- 



PL cxv. Sphenopteris adiantoides, L. and H. 



Locality. — Jarrow Colliery. 

 Horizon. — Lower Coal-Measures. 



PL cxvi. Megaphyton approximatum, L. and H. 



Locality. — Jarrow\ 



Horizon. — Lower Coal-Measures. Eoof of High Main Coal. 



Remarks. — I have previously united this witli Megaphyton 

 frondosum, Artis. As there is, however, a difference of 

 opinion among botanists on this point, it had perhaps better 

 be treated as a distinct species until further examined 

 into. 



PL cxvii. Megaphyton distans, L. and H. 



Locality. — Felling Colliery. 



Horizon. — Lower Coal-Measures. Shale over Low Main 

 CoaL 



Remarks. — This is the Megaphyton feondosum, Artis. 

 The specific name distans cannot be substituted for frondosum 

 on such grounds as those suggested by Lindle}^ and Hutton. 



PL cxviii. Lepidodendron elegans. 

 Locality. — Felling Colliery. 

 Horizon. — Lower Coal-Measures. 



Remarks. — I have not seen the original of this plate, but 

 believe it is also referable to Lepidodendron ophiukus, Brongt. 



1 Steinkolilen-Calaraarien, part ii. , 1884, jil. xvii., fig. 2, pp. 22 and 27. 



2 Loc. cit., p. 63, pi. i., figs. 1-6; pi. xxviii., fig. 1. 



