22Q M. YOKOYAMA; MESOZOIC PLANTS 



may represent a thrice pinnated portion of a frond, has been verified 

 in several specimens in my collection. That the pinnœ were not all 

 in one plane is also shown by having them more or less overlapping. 



This species, which exhibits a close relationship to Fecpoteris cxilis 

 IMiilhps (Yokoyauia, Jurassic Plants, p. 35, pL I, tig. .S-10.), is dis- 

 tiu<>-Lii.ihed from it bv auricLÜate and at the same time more falcate 

 pinnules. 



/.or/.— lùijikawa (very frequent), Yuasa (do.), Kataji (d().), Fuji- 

 kawa (less fVepicnt), 'J'ögodani. ßy Nathorst it has been also de- 

 scribed from Torikubi. 



11. Pecopteris cf. virginiensis Fontaine. 



n. XXIV, Fig. 1. 



Peüoplcrh vinjinicnsh. — ■Fontaine, The Potomac or Youuger Mesozoic Flora, p. 82, 

 pi. YIII, figs. 1-7, IX, 1-G, XXIV, 2, CLXIX, 3. 



A fragment of a pinna with ahernate or subopposite, distant, 

 \ou<^' linear, toothed pinnules no doubt belongs to a fei-n which, if not 

 identical Avith, is at least very closely allied to, Pecopteris vinjiiiiensis 

 Fontaine, from the Potomac Formation of America. The lateral veins, 

 owing to the thick consistence of the leaf are not quite distinct, but so 

 far as I can see, they seem to l)e acutely directed foJ'vvard and at least 

 once forked. 



Loc. — Fujikawa. Tanno (?). 



12. Chlaclophlebis Nathorsti vi. 

 V\. XXVIII, Figs. 3, 4, 10, 11. 



C'hlfKhipItlrhis .s;/).— Natliorst, Beiträge z. mesoz. Flora Jai>aus, p. -1, pi. I, 

 figs. 1-8, p. 8, l:-i. 



Frotiil hipinnaled ; rachises conipaycitivebi slender : piitme alleniate, 

 eluiujated, lutrrutred at hase : pimudes coriaceous, opposite or alternate, close 



