PI. ATE LXXXVI. 



Page. 



Fig. 1. PoPULUs iialsamoides? Gopp. Fossil Forest 696 



2. Poi'ULUsf VIVARIA u. sp. Fossil Forest 696 



3. CoRYLUS MACQUARRYi Heer. Fossil Forest 699 



4,5. Betcla IDDINGSI n. sp. Yellowstone River below Elk Creek 698 



6-8. Castanea pui.Chei.la n. sp. Fossil Forest " 702 



812 



