[PENHALLOW] A REPORT ON FOSSIL PLANTS 307 
chief, and perhaps the only difference, is the one of size, and it may 
be that they should be regarded as identical, but for the present it 
seems better to adopt a provisional name for the British Columbia spe- 
cimen, which is, therefore, called C. skagitensis. 
1430 
7. 8 ASPIDIUM FREDERICKSBURGENSE, Font. 
I 
Number 1430 
7,8 
showing only a portion of the termination of the pinna in each case. 
The form of the pinnules varies somewhat greatly and presents numer- 
ous gradations between the two extremes precisely as in Fontaine’s 
Aspidium fredericksburgense, which this plant undoubtedly is. This 
species, originally described by Fontaine from the Potomac Formation 
at Fredericksburg, Virginia (19), has since then been recognized by 
Dawson (5) in the early Cretaceous at Anthracite, B.C. It will be 
readily recognized that so strongly defined a Lower Cretaceous type as: 
this is, must have special value in determining the horizon in which ‘+ 
may be found. 
si NILSONIA PASAYTENSIS, n. Sp. 
3 
embraces numerous fragments of a bi-pinnate frond, 


Fic. 3. Nilsonia pasaytensis, n. sp. x 1/1. 
Number <= embraces two small specimens, each of which repre- 
sents a single pinnule of a compound leaf, attached to a strong rachis. 
Each pinnule is approximately triangular in outline, with a broad base 
and a somewhat narrow though obtuse apex. The margin is entire 
and the whole organ is transversed by prominent and parallel nerves 
about 1.5-2 per mm., which extend from the base to the apex. This 
species is quite distinct from anything hitherto described from Canadian 
localities, although Dawson (9) published a new species from the Upper 
Cretaceous of Baynes Sound, Vancouver Island, but from the published 
figures which show a larger plant with a very different form of pinnule, 
there would seem to be no connection between the two. 
