24 AIlï. 9. — M. YOKOYAJIA. 



Kichthofen's China ]. c), or bv Heer as A. v-hlthyense (fig. 3, 

 pi. LUI, Beiträge 1. c). But it is not possible now to deter- 

 mine them \Yith any degree of accuracy. 



J. Fang-t'u> Wei-Hsien, 

 Shan-tun g-Shêng/^ 



1. CONIOPTERIS HYMENOPHYLLOIDES (Bkonc;n.). 



PI. VI. Fig. 3. 



Coniopleris hymenophylloides Seward. The Jurassic Flora — The Yorkshire 

 Coast, p. 99, pi. XVI, fig. 4-6, XVII, 3, 6-8, XX, 1, 2, XXI, 1-4. 



SjjJxeno'pierin humencphylJoides Bcongniaet. Histoire Végétaux Fossiles, p. 

 189, pi. LVI, fig. 4. 



Thyrsopteris Murrayana Ilecr. Beitr. zur JuraÜora Ostsih., 1876, ]•. 30, 

 pi. II, fig. 4, II, 1-4, VIII, 11 11. Yokoyama Juiassic Plants from Kaga, Hida 

 and Echizen, p. 22, pi. XII, fig. 5. 



ThyröOpteritf Maa/ciaiia Heer, Beitr. z. Jurafioi-a, 1876, p. 31, pi. I, fig. 

 1-3, II, 5, 6. 



Dlcksonia nephrocarpa Yokoyama, loc. cit., p. 25, pi. I, fig. 1. 



For further synonyms see Seward already cited. 



Seward in the work before cited united many ferns there- 

 tofore known under different names with the British species 

 which was first described by Broxgniart under the name of 

 Sphenopieris hymejioj^hylloide^. The reason wliy this plant received 

 so many different denominations is undoubtedly due to tlie great 

 variability in form of the |»innules, as has been proved by Seward 

 and also to the fact that the fertile pinnules had l)een treated 

 as belonging to a diffei-ent fern. 



Some fragments of pinnit" of a fern brought from the coal- 

 uaine of P^ang-t'n, in spite of theii- rather imperfect preservation, 



1) UJJtitil8iPJiJ5T-Ft=^ 



