238 TJic American Geologist. October, i,s99 
by A. S. Cochrane in 1881, by Dr. R. Bell in 1882 and by R. 
G. McConnell in 1890; also at three different exposures on the 
.Peace river by professor Macoun in 1875 and by Mr. Mc- 
Connell in 1879. In the Mackenzie district, on the banks of 
the Long Reach of the Lower Liard river and on the Hay 
river forty miles above its month by Mr. McConnell in 1887, 
and at four different and rather widely distant exposures on 
the Mackenzie river by Mr. McConnell in 1888. 
Most of the fossils from these localities that were collected 
before 1875 have been provisionally reported on in the reports 
of progress of the Canadian survey for the years in which 
they were made. Those, however, that were collected between 
the years 1875 and 1890, both inclusive, form the subject of 
an illustrated paper, by the writer, on "The Fossils of the 
Devonian Rocks of the Mackenzie River Basin ;" published in 
1891.* This publication, which is practically a continuation 
of Mr. Meek's paper on the same subject, already referred to, 
adds fifty-seven additional species of purely marine Inverte- 
brata to the previously known fauna of these rocks, as under : 
Spongise i 
Corals (inclusive of Stromatoporoids) 10 
Crinoidea i 
Vermes 3 
Polyzoa ( = Bryozoa) 7 
Brachiopoda 20 
Pelecypoda 7 
Gasteropoda 3 
Pteropoda I 
Ostracoda 3 
Trilobita i 
Total 57 
According to Mr. McConnell, a section of the Devonian 
rocks in the Mackenzie district, in descending order would be 
somewhat as follows : 
1. Upper limestone (about) 300 feet 
2. Greenish and bluish shales alternating 
with limestone (about) 500 feet 
3. Grayish limestone, interstratified with 
dolomites, the lower part of which 
may be older than Devonian 2,000 feet 
(or more) 
♦Geological Survey of Canada, Contributions to Canadian Palaeonto- 
logy, vol. I, part 3. 
