The Devonian System in Canada. — WJiiteavcs. 239 
The whole of the fossils collected by Mr. McConnell, pro- 
fessor Macoun and Dr. Bell are from the upper part of the 
middle division of this section. Of the fifty-seven species of 
fossils in the foregoing list, twenty-two are apparently found 
also in the Hamilton formation of Ontario and the state of 
New York; ten (but only six additional ones) in the Devonian 
rocks of Iowa now referred to the Chemung ; and seven in the 
Chemung of the states of New York and Pennsylvania. On 
the other hand, there are strong reasons for supposing that 
the whole of these fossils are from a horizon nearly correspond- 
ing to that of the "Cuboides zone" of Europe. In the first 
place, three specimens of a brachiopod which the writer has 
identified with the Rhynchonella (now called Hypothyris), cu- 
boides of Sov;erby, were collected by Mr. McConnell. one at 
the Hay river in 1887, and two on the Peace river at Ver- 
milion falls in i88g. It is true that Mr. Schuchcrt thinks 
that these three specimens should be called Hypothyris em- 
monsi, but Mr. Walcott had previously expressed the opinion 
(in 1884) that "there is little doubt but that Rhynchonella in- 
termedia, R. emmonsi and R. venustula Hall, are varieties of 
R. cuboides,* of the Devonian of Europe." On the Hay and 
Peace rivers the supposed Hypothyris cuboides is associated 
with Spirifera disjuncta (or Yerneuili), and other fossils that 
are elsewhere supposed to be characteristic of the Cuboides 
zone are to be met with in the published lists of species from 
the Athabasca and its tributaries, or the Mackenzie. The 
discovery by Mr. McConnell at the Ramparts on tlie Macken- 
zie river, of two large specimens of a Stringocephalus which 
cannot at present be distinguished from S. burtini may indi- 
cate a northwestward extension of the Stringocephalus lime- 
stone of Manitoba. The still later recognition by Dr. John 
M. Clarke, in 1898, of Manticoceras intumescens in the cast of 
the interior of three chambers of the septate portion of a species 
of goniatite from the Hay river, collected by Mr. McConnell 
and figured by the writer, would seem to indicate the existence 
of the equivalent of the "Intumescens zone" or Naples fauna 
at that locality. 
The present state of our knowledge of the Devonian rocks 
♦Monographs of the United States Geological Survey, vol. VIII, 
(Paiasontology of the Eureka District), page 157. 
