104 TRANSACTIONS OF THE [maR. 17, 
Above this limit also is another fauna, whose relation to 
Olenellus is not quite clear, but is a very close one. This is the 
Protolenus Fauna. 
A number of the species of this fauna have already been de- 
scribed by the author in the Transactions of the Royal Society 
of Canada and the Bulletin of the Natural History Society of 
New Brunswick,* but the present paper will considerably en- 
large the number of species. 
A valuable feature in the work of Mr. W. D. Matthew in 1892, 
93 and 794 and of Mr. G. Van Ingen in 1894 is that they care- 
fully noted the special horizons from which the fossils collected 
by them came. This has enabled the author to distinguish 
several sub-zones, each characterized by its own assemblage of 
fossils, and permitted him also to show, with more exactness 
than had previously been possible, the relation of each species 
to the particular kind of sediment in which it is found. One 
can thus present, in a clearer light than heretofore, the life of the 
Cambrian Time prior to the advent of Paradoxides, and show 
that there was a fauna of trilobites of this age independent of 
that which accompanied Olenellus, one which was more pelagic 
in its facies and also consisted of forms that in some respects 
were more primitive. 
THE CAMBRIAN TERRANE IN NEw BRUNSWICK. 
To make clearer the relation of the groups of fossils which 
the writer proposes to describe in this paper to the fauna of 
the Cambrian system as a whole in Eastern Canada, a brief out- 
line will be given of the discoveries which have been made in 
the Cambrian terrane in New Brunswick. 
It was in 1865 that Prof. C. F. Hartt, by comparing the col- 
lections made by the Geological Survey of New Brunswick with 
Barrande’s figures and descriptions ofthe Primordeal Fauna, 
was enabled to announce the presence of that fauna in Southern 
New Brunswick. Nothing further was done with these faunas 
until the author resumed their study in 1881. Hartt’s discovery 
was of the Lower Paradoxides Fauna, and it was not until 1885, 
twenty years later, that the Upper Paradoxides Faunat was 
found. About 1890 an Arenig Fauna, “ Quebec Group,” was 
found, and a year later that of Dictyonema flabelliformis. 
These discoveries showed that the St. John group contained 
not only the full series of Cambrian deposits, but a part of the 
Ordovician system as well. 
*Trans. Roy. Soc. Can., Vol. vii., sec. iv., p. 135; Vol. xi., sec, iv., p. 85. 
Nat. Hist. Soc. N. Brunswick, Bull. 10, p. 34. 
+I use the term ‘“‘upper”’ here relatively, because on this continent no higher has 
been found ; it is the middle Paradoxides Sub-Fauna of Europe. 
