700 General Notes. . [July, 
creek, and at one locality far to the north-west on the Suskwa 
river. The containing rocks are sandstones, shales and con- 
glomerates, with seams of coal, in some places anthracitic. They 
may be traced for 130 miles in a north and south direction, and 
form troughs included in the Palæozòic formations of the moun- 
tains. The plants found are conifers, cycads and ferns, the cycads 
being especially abundant and belonging to the genera Dioonites, 
Zamites, Podozamites and Anomozamites. Some of these cyca- 
daceous plants, as well as of the conifers, are identical with spe- 
cies described by Heer from the Jurassic of Siberia, while others 
occur in the Lower Cretaceous of Greenland. The almost world- 
wide Podozamites lanceolatus is very characteristic, and there are 
oy aie ; nail 
e 
been found in these beds, whose plants connect in a remarkable 
way the extinct floras of Asia and America end those of the 
jurassic and Cretaceous periods, 
Above these are beds which, with some of the previous spe- 
cies, contain a few dicotyledonous leaves, which may be provis- 
ionally referred to the genera Sterculia and Laurus; and still 
higher the formation abounds in remains of dicotyledonous plants . 
of which additional collections have been made by Mr. T. C. 
Weston. The beds containing these, though probably divisible 
into two groups, may be named the Mill Creek series, and are 
approximately on the horizon of the Dakota group of the United 
States geologists, as illustrated by Lesquereux and others. The 
species are described in the paper, and differ for the most part 
from those of the Dunnegan group of the Peace river series, which 
is probably of the age of the Niobrara group, and, of course, still 
more from the overlying Laramie group. With regard to the 
latter, the author adduced some new facts confirmatory of his pre- 
viously expressed view as to the position of the Laramie at the 
top of the Cretaceous and base of the Eocene, and also tending 
to show that some of the plants still held by certain palzo-bot- 
anists to be of Miocene age are really, in Canada at least, fossils 
of the Laramie group, and consequently considerably older than 
is currently supposed. The collections of plants studied by the 
author had, for the most part, been placed at his disposal by the 
director of the Geological Survey. 
THE SYNCARIDA, A GROUP OF CARBONIFEROUS CRUSTACEA.— The 
following are the conclusions of a paper read at the last meeting 
the National Academy of Sciences. The genus Acanthotelson 
a _ of Meek and Worthen was by them doubtfully referred to the 
ugh stated ee bear some resemblance to the migi 
Deca fter describing the fossils from specimens kindly 
: loaned by Messrs. R. D. Lacoe and J. C. Carr, we arrived at the 
