48 ROYAL SOCIETY OF CANADA 
In addition to the above, Dr. H. M. Ami informs me that there 
are also specimens of Juglans sp. and Abietites tyrrellii, Dn., in the 
collections of the Geological Survey, so that the entire list of plants 
from these earlier explorations, embraces 25 species. The collection 
by Mr. Weston in 1889, now under consideration, embraces 29 species, 
and the former lists are therefore extended by 24, and possibly by 26 
additional species. The entire collection is as follows : — 
SPHENOPTERIS GUYOTTII, Lesq. 
Lesquereux, Cretaceous and Tertiary Floras, VIII., 137, Pl. XXI., 1-7. 
Tertiary of the Green River Group, Florissant, Colorado; and Paskapoo Series 
of Red Deer River, Canada. 
The original description of this plant was given by Lesquereux 
in his Cretaceous and Tertiary Flora, as based upon specimens from 
Florissant, Colorado. The present determination is based upon one 
small fragment of a pinna, and is by no means satisfactory, though 
the venation and the form of the ultimate segments seem to point to 
the correctness of its reference to 8. guyottii. 
SPHENOPTERIS BLOMSTRANDI, Heer. 
Heer, The Miocene Flora of Greenland (1874), 18, Pl. I., 3-5. 
The Miocene Flora and Fauna of Spitzbergen (1870), 31. 
Eocene (Paskapoo Series) of Red Deer River, Canada. 
This species appears to be represented in the Paskapoo Series by 
several fragments of fronds. As determined by both venation and 
form of the pinnules, they are apparently inseparable from the type 
as figured by Heer in his Miocene Flora of Greenland and Spitzbergen. 
LASTREA FISCHERI, Heer. 
Newberry, Later Extinct Floras, XXXV., 10, Pl. XLVIII., 6. 
Miocene of the John Day Valley, Oregon; Eocene of the Red Deer River, 
Canada. 
One specimen showing three fragments of as many pinnæ. The 
form, size and other features of the pinnules correspond exactly with 
