2-2C} M. YOKOYAMA; MESOZOIC PLANTS 



considered as those of Z. Nnnmanni. However as the difference be- 

 tween the two species lies not in the l)readtli, lint in the form of the 

 leaflets and in their mode of attachment to the racliis, it is in many 

 cases impossible to decide which of the t\N'o species we are really 

 dealing" with, especially when the specimens are in small fragments. 

 More(iver tliere is much doubt whether Z. Nauinatnii is not a species 

 founded on the lower part of a leaf of Z. IhicltiaHuiii. 



Loc. — Kaisekiyama, Kataji, Tögodani, Ishiseki, Yuasa. 



20. Glossozamites parvifolius 7//. 

 PL XXI, Figs. 5, 5a. 



I possess a small fragment only of a pinna in which the rachis 

 dichotomises, with small, distant, opposite or subcjpposite, entire, 

 obovate leaflets, about o mm. in length and attached to the rachis 

 almost perpendicularly. Veins are few, equal, divergent, those in the 

 middle part of the leaflet dichotomous, and those near the lateral 

 margin simple. 



This ])lant reminds us of l\')iJo.:aniitrs Ç(Tlo-'<so.:a)nites) ohoratns 

 Scherjk (Die Foss. l^flanzen d. AVernsdorferschichten i. d. Xordcarpa- 

 then, ]). 10, pi. II, tigs. 7-10, III, l-o), wliich however possesses 

 much larger leaflets. 



Loc. — Yuasa. 



21. Nilssonia Johnstrupi Heer. 

 Fl. XXV, Figs. 1-4. 



Xilssnuiti JohiistiKpi. — Heer, Flora der Komescliicliteii, Flora Fossilis Arctica, 

 Vol. VI. p. 44, pi. VIII, figs. 1-G. 



yil.sso)tia cf. nrieiitdli.s. — Natliorst, Beiträge. I.e., p. 5, PI. I. tig. 4-5. 

 Xow and then there occur at Eyöseki oval or linear oval, entire 

 leaves of a cycad which exhibits a close resemblance to Nils.sonia ori- 



