The Utica Terrane in Canada. 239 
or superficial deposits belonging to glacial, inter-glacial and 
lacustrine deposits so as to cover it almost totally, reappears 
in the vicinity of Nottawasaga Bay, near Collingwood and 
Windsor, where it can be easily recognized by its lithologi- 
cal characters and fossils. The list of species collected by 
Mr. A. S. Cochrane, of the Geological Survey of Canada, at 
Collingwood, in 1887, and determined by the writer com- 
prises the following forms :— 
1. Obscure Graptolite, probably a Diplograptus cf. D. pristis, 
Hisinger. 
. Lingula Progne, Billings. 
sp. 
. Orthis testudinaria, Dalman. 
Leptxena sericea, Sowerby. 
. Strophomena alternata, Conrad. 
. Rhynchonella increbescens ? Hall. 
. Iyrodesma nulchellum, Emmons. 
. Endoceras proteiforme, Hall. 
10. Primitia Ulrichi, Jones. 
11. Beyrichia sp. | 
12. Triarthrus Becki, Green. 
13. Asaphus Canadensis, Chapman. 
The absence of Leptobolus in this list is almost phenome- 
nal, inasmuch as the JL. insignis of Hall occurs in large 
numbers, as a rule, in rocks of precisely the same horizon 
in other parts of Canada. 
In the northern portion of Lake Huron and the Manitou- 
lin Islands, where the Utica again crops out after disappear- 
ing beneath the waters of Georgian Bay, or where the 
shales, soft, friable, and easily denuded, have been carried 
away along the line of a great pre-glacial river, it is seen 
on St. Joseph’s Island, in the islands north of Maple Cape, 
and along the shores of the Shequenandod Bay and Islands. 
At the last mentioned locality—Shequenandod Bay and 
Islands—the following fossil remains have been determined 
by the writer :— 
( ID TN i 9 bo 
1. ? Dendrograptus simplex, Walcott. 
2. ? Climacograptus bicornis, Hall. 
3. Orthograptus quadrimucronatus, Hall. 
4, Leptobolus insignis, Hall. 
