132 ETTFFOEDIA. 



which arc attached to the pinna axis by the whole of the base, 

 have an entire margin and blunt apices. On the under side of 

 the pinnules a row of pits, representing the large single sporangia, 

 occurs on each side of the midrib. 



Oolite Shale, Scarborough. Boiverlank ColL 



V. 3671. A small and imperfect specimen, but of interest as 

 agreeing very closely with Phillips' figure, 1 which evidently 

 represents a badly preserved fragment. 



Gristhorpe Bay. 



V. 3676. Part of a frond in which the pinnules are longer 

 than usual, having a length of 5 mm. and bearing seven sporangia 

 on each side of the midrib. The apical annulus is clearly shown. 



13,496. Portions of two bipinnate pinna3, which by their manner 

 of occurrence on the shale appear to belong to a tripinnate frond. 

 Gristhorpe Bay. Presented by Dr. Murray* 



39,244. Portions of two bipinnate pinna3, one of which is 

 attached to the main rachis. The sporangia appear on the upper 

 surface of the pinnules as three to five circular projections on 

 each side of the midrib. Labelled by Bean Pecopteris oUusifolia. 



Upper Shale, Scarborough. Bean ColL 



39,241. A large specimen labelled by Bean Pecopteris oltusifolia 

 and P. exilis. 



Genus RTJFFORDIA, Seward. 

 [Brit. Mus. Catalogue ; Wealden Flora, vol. i. p. 75, 1894.] 



The generic name Ruffordia was substituted for the provisional 

 genus Sphenopteris, because the evidence afforded by the rich 

 Wealden material seemed to justify the inclusion of Dunker's 

 species, Sphenopteris Goepperti, in the Schizasaccae ; the new name 

 was suggested as indicating a less imperfect knowledge of affinity 

 than is implied by the generic term Sphenopteris. The genus is 



1 Phillips (29), pi. viii. fig. 16. 



