34 Allï. ?. 31. YOKOYAMA. 



nre Itlunt at npex are contained in one piece of stone. The 

 Veins are numerous, being up to 20 in number and mostly 

 provided with a finer interstial vein. In shape they correspond 

 to what Heer once called the variety Eichwaldi. 



2. GINKGO SP. 



PI. XI. Figs. 4-7. 



We have several specimens of leaves of a Ginkgo all of 

 which lack their apical portions. Their general shape however 

 reminds us of those of Ginkgo lepida (Heee Beitr. z. Juraflora 

 Ost-sib. 1876, pi. XII) and Ginkgo sibirica (ibid. pi. XI), al- 

 though fig. 7 is also not unlike that of Ginkgo concinna Heer 

 (ibid. pi. XIII, fig. 7). 



0. Pao-êrh-shan, Shêng-ching-Shêng.^^ 

 1. PHYLLOTHECA sp. 



PI. XL Fig. 8. 



Numerous fragments of roots of an equisetaceous plant, 

 1-3 mm. in breadth and with slender fibres rising from them, 

 look very much like those figured by Heer from Siberia, as 

 probably belonging to his Phyllotheco sibirica (Beitr. z. Juraflora 

 Ost-sib. u. d. Amurl., 1870, p. 43, pi. TV, fig. 7). 



1) ^:^^4è!^UJ {-'O kilora. soulh-e:ist of T'iehling. 



