SOHIZ^ACEJS. 129 



V. 2523. Two speoimens on tte same piece of rock ; one of 

 them is from the basal portion of a frond, and shows three main 

 ribs converging towards a common point, as seen in Text-figs. 17-1 9. 



The segments of the other specimen have the long and narrow 

 foi-m similar to that of 39,224 (PI. XIII. Fig. 3). 



Upper Shale, Gristhorpe. Presented hy Mr. J. Williamson. 



13,508. In this example the upper portion of the pinna consists 

 of a narrow lamina with dentate edges, similar to the segment 

 shown in PL XIII. Fig. 3 ; in the lower part the pinna bears long 

 and narrow segments. Cf. V. 2891 (Text-fig. 18). 



39,223. A large specimen about 25 cm. in length. In the lower 

 portion the pinnse are deeply pinnatisect ; the segments extend 

 almost to the rachis, as in pi. civ. of the Fossil Flora of Lindley & 

 Hutton ; the segments are rather far apart, as in the Bictyoph/llwm 

 Lechenlyi form of frond, and they have a crenulate margin. The 

 longest ultimate segment measures 10-5 cm. in length. In the upper 

 part of the specimen the segments become gradually shorter, and 

 the lamina connecting the bases of the segments is broader than 

 in the lower part of the pinna. The margin of the shorter and 

 smaller segments in the upper part of the pinna is entire, agreeing 

 with those of V. 2724 (PI. XVIII. Fig. 1). A specimen of this 

 form serves to illustrate the identity of Zigno's B. LecJcenhyi with 

 D. rugosum of Lindley & Hutton. Labelled by Bean Phlehojpteris 

 Phillipsii, Phyllites nervulosus, and Dictyophyllum rugosum. 



Gristhorpe Bay. Bean Coll. 



Other specimens : — V. 3669 and 10,370 (similar to 39,224 ; 

 venation clearly shown). 



Family SCHIZ^ACE^. 



Genus KLTJKIA, Eaciborski. 

 [Engler's Jahrb. vol. xiii. p. 1, 1891.] 



The genus Kluhia was instituted by Eaciborski as a substitute 

 for Peeopteris in the species P. exilis, Phill., on the ground that 

 the sporangial characters proved the fern to be a member of the 

 SohizaeacesB ; a new name was, therefore, wisely chosen to mark 

 a fuller knowledge of botanical affinity than is expressed by the 

 form-genus Pecopteris. 



