The Utica Terrane in Canada. 181 
an interesting addition to the fauna of the Utica. Serpulites 
dissolutus, Billings, has also been found in several localities. 
A fossil sponge—Stephanella sancta, Hinde, has recently 
been described from the Utica shales of Ottawa in the 
Geol. Mag., new series, Dec. 1m, vol. viii, No. 1, for January, 
1891, pp. 22-24, in a paper entitled : ‘‘ Motes on a new Fossil 
Sponge from the Utica shale formation (Ordovician) at Ottawa, 
Canada.” This sponge proved to constitute a new and very 
simple type of a Lithistid sponge—whose spicules resemble 
closely those of the modern Tethea—many specimens of 
which occur in the Post-Tertiary clays of the Ottawa and 
St. Lawrence river basins. 
GEOGRAPHICAL DistRipuTion.—Having glanced at the 
stratigraphical relations of the Utica terrane and at its 
lithological as well as chemical constituents, then surveyed 
over in a general way the paleontological characters, let us 
look for a moment at the geographical distribution of the 
same in Canada. 
In the Province of Quebec, the Utica is first met in the 
East in loose blocks and specimens brought up on the north 
shore of the Island of Anticosti by floating ice. There is 
scarcely any doubt that the Utica shales occur in their 
proper and natural position between the Trenton and 
Hudson Rive: terranes—in the unbroken and fine sequence 
of Ordovician strata northwest of Anticosti—and that on ac- 
count of their soft, brittle and easily denuded character they 
have been washed and carried away from that section now 
occupied by the north channel of the St. Lawrence River. 
But the most easterly outcrop of the Utica as yet recorded 
in situ occurs near the mouth of the Murray River, Murray 
Bay—where Mr. W. F. Ferrier made an interesting collec- 
tion of fossils which were determined and described by the 
writer in the ‘‘ Can. Record of Science” for 1887, pp. 101- 
107. The paper is entitled : “ Noteson Fossils from the Utica 
Formation at Point-a-Pic, Murray River, Murray Bay (Que.), 
Canada.’ In this paper twelve species of fossils were noted, 
as follows :— 
1. Diplograptus sp. (resembling D. pristis, Hisinger.) 
