LACCOPTEKIS!. 



81 



Museum convinced me that it is identical with Brongniart's 

 type. Nathorst/ who regarded Laeoopteris as a more suitable 

 generic designation than Plilebopteris, has expressed the view that 

 Pldehopteris polypodioides, P. crenifolia,'' and P. propinqtia are 

 specifically identical ; the same author also states that Phillips' 

 species Peoopteris ligata ' is identical with Laccopteris polypodioides. 



Fig. 9. — ? Laccoptrnx pulijpoidoules. From a specimen in the "Whitby 

 Museum. (Nat. size.) 



The specimen figured by Phillips (in the York Museum) as 

 Pecopteru caspitosa, and redrawn in Text -fig. 8, is undoubtedly 

 a badly preserved fragment of a leaf of Laccopteru polypodioides ; * 

 the characteristic habit of the frond is clearly shown, and in 

 some of the pinnules there are distinct traces of sori. 



The drawing reproduced in Text-figure 9 was made from 



1 Nathorst (80), pp. 60 and 79. 



^ The type-specimen of tliis species is in the York Museum. 



^ The t)-pe-specimen is said by Nathorst to be in the Oxford Museum. 



* Seward (99), p. 201 (footnote). 



