40 M. YOKOYAMA. 



which is 11 mm. broad and provided with numerous fine crowded 

 longitudinal striae. It is too imperfect for specific determination, but 

 that it is one of the Equisetaceous plants is shown by the presence of a 

 joint. Loc. — Okamigd. 



Class. 2. Phanérogame. 



Subclass 1. Gymnospermae. 



Order 1. Cycadeaceae. 



Fam. J. Zamieae. 



1. Anomozamites Schimp. 



23. Anomozamites sp. 

 PI. VII, fig. Id. 



A rather imperfect specimen of a leaf of an Anomozamites, or 

 perhaps, of a Nilssonia, with subopposite quadrangular segments 

 rounded at angles and possessed of fine simple parallel veins, looks 

 not unlike some of the figures of A. inconstans Gap. from the Infra- 

 Liassic series of Tongking (Zeiller. Examen de la flore fossile des cou- 

 ches de charbon du Tongking. pi. XT. fig. 7), and also those of Nihsonia 

 comtula Hree (Beitr. .:. Juraflora Ostsib, u. d. Amurl, 1878, pi, IV, fig. 

 12, IS) from the Lena regions in Siberia. However, a positive deter- 

 mination must be postponed until better specimens are obtained. 



Loc. — Simamura. 



2. Nilssonia Brgt. 

 24. Nilssonia orientalis Heer. 

 PI. XIV. fig. 4-9. 



Leaf entire or rarely segmented, truncated at apex, rounded at 

 base; veins fine, dense, slightly curved and directed forwards. 



