FKOM KOZÜKE, KU, AWA, AXD TOSA. 219 



parts of the frond. ;md this has been already noticed by Fontaine in 

 his American specimens. Fecopterù hreripmnis Font. (The Potomac 

 Flora, p. 88. pi. XXVI, û'^. 4) seems to be only a part of the frond of 

 this fern ^vith toothed pinnules. rccopterh sp. of X'athorst from 

 Haginotani (/. c. V\. VI, lig. 4) also appears to belong to it. 



Ill one of the fragments apparently belonging to this fern, 

 pinnules were observed bearing sori (]»1. XXVII, fig. 1, \a) Avliich 

 are preserved as black round d<jts in number of 2-4 on each side of 

 the midvein. 41iis mode of fructification strongly reminds us of the 

 recent genus Aspidiitm. 



Log. — Kaisekiyama (most abundant), Yoshida-Yasbiki (lumier- 

 oiis), Chöja, Fujikawa (frequent), Tôgodani. 



lO. Pecopteris Geyleriana Nath. 

 PI. XXL Fb-. U. V\. XXIII, Fig. 1, \ü. Ph XXVIII, Fiu-. 5. 



Fecopti'iis (Tf)jli'ii(Oiii — Natliorst, Beiträge zur mesoz. Flora Japans, p. 8, pi. IV, 

 tig- 1, VI, 1. 



This plant first described by Xatborst from Ryôseki has been 

 since found in several other localities. As this author had already 

 pointed out. many of tlie pinnules are erired, not only on the anterior 

 side, but also often on the posterior side, so tliat they become more or 

 less triangular in shape. And it is a peculiar character of this fern 

 tliat the lowest pinnules on the front of the rachis are often falcate 

 backward instead of forward. The pinnules are in general blunt, but 

 in tbose wliich are elongated are often pointed, ^"eins are in most 

 cases indistinct save the evanescent midvein ; in some cases, however, 

 dichotomous lateral veins were observed (pi. XIII, fig. \n). 



Xathorst's assum{)tion. that the specimens with sm:dler and more 

 pointed pinnules like those represented in fig. :?, (5, pi. Y\ of his work 



