105 
Alnus crispoides Berry n. sp. 
Leaves of variable size, elliptical in outline, widest near the middle 
and rounded at both ends, sometimes narrowed somewhat either distad or 
proximad. Margins with rather uniform, close-set, dentate teeth. Length 
ranging from 4-5 cm. to 9 cm. Maximum width ranging from 3 cm. to 
5 cm. Petiole stout, curved, enlarged proximad, about 1 • 25 cm. in length. 
Midrib stout. Secondaries stout, about 7 subparallel, camptodrome pairs. 
Tertiaries comprising several curved craspedodrome branches from the 
outer distal sides of the larger secondaries and internal ones which are thin 
and percurrent or anastomosing midway between the secondaries. 
This well-marked species is represented by a large number of, for the 
most part, broken specimens from Joseph creek. It is very close to the 
existing North American var. crispa (Ait.) Winkler of Alnus alnobetula . 
Associated with the fossil at Joseph creek are several Alnus cones, which 
may belong to the same species. 
Alnus kefersteinii (Goppert) Unger (?) 
Plate XV, figure 6 
Alnus kefersteinii Heer, FI. Foss. Arct., Bd. 2, abt. 2, p. 29, PI. 3, figs. 7, 8, 
1869. 
What is commonly considered to be identical with this European 
Miocene species has been recorded from many localities in Alaska, Green- 
land, Iceland, Spitzbergen, and Sakhalin island. The specimen figured 
from Newhykulston creek has a more elongated tip than usual for this 
species, but more typical shapes occur in the collection from Joseph creek. 
Whatever their botanical affinity they represent the same form which in the 
northern Eocene has been referred to this species. Because they are 
doubtfully related to the European type I have queried the identification, 
as I feel sure that these Eocene forms will eventually be recognized as 
representing a distinct species. 
Corylus macquarrii (Forbes) Heer 
Plate XVII, figure 6; Plate XVIII, figures 2-4; Plate XIX, figure 5 
Corylus macquarrii Heer, FI. Foss. Arct., Bd. 1, p. 104, PI. 8, figs. 9-12, 
PI. 9, fig. 1, Pl. 17, fig. 5 d, PL 19, fig. 7 c, 1868. 
The specific differentiation of the leaves of Corylus is a perennial 
problem for which I can suggest only a partial solution. Corylus macquarri 
was first described by Forbes from the Eocene of the isle of Mull as a 
species of Alnites. It has since been recorded from the Eocene of Alaska, 
Greenland, Spitzbergen, Iceland, Grinnell Land, Sakhalin island, and 
various localities in Canada, the United States, Europe, and eastern Asia. 
Meanwhile eight additional fossil species from one or the other of these 
same beds have been described. Definitely referred to this species are 
forms from the Paskapoo of Alberta, from Porcupine creek, Horsefly and 
Mackenzie rivers; from many localities in Alaska; from the Upper Clamo 
