135 



1895; and at Minago and Wekusko lakes, in the District of Saskatohe- 

 vs^an, in 1896. 



Somewhat extensive collections of the fossils of the limestones and 

 sandstones of Lake Winnipeg and the Red River valley were made by Dr. 

 R. Bell in 1879 and 1880, by T. 0. Weston in 1884, by J. B. Tyrrell in 1889 

 and 1890, by D. B. Bowling and L. M. Lambe in 1890, and by D. B. Dow- 

 ling in 1890 and 1891. The authorities of the United States National 

 Museum at Washington have kindly lent to the writer, for examination 

 and comparison, all the fossils from the limestones of the Red River 

 valley in their collection, and several fossils of much interest collected at 

 East Selkirk and Lower Fort Garry by A. McCharles in 1884, were pre- 

 sented by him to the Museum of the Survey. The fossils collected by 

 Dr. Bell from the Winnipeg limestones have been reported upon, pro- 

 visionally, by the writer, in the Reports of Progress of this Survey for 

 1878-79 and 1879-80, and, since then, papers descriptive of some of the 

 most remarkable species in these collections have been published in the 

 Transactions of the Royal Society of Canada for 1889 and 1891, and in 

 the Canadian Record of Science for July, 1895. 



The last part of this volume contains a systematic list of all the fossils 

 from the Hudson River formation at Stony Mountain that are repre- 

 sented in the Museum of the Survey. In the present paper it is intended 

 to supplement this list with a similar one, as complete as possible, and 

 with descriptions and illustrations of such species as may seem to be new, 

 of the fossils of all the Cambro-Silurian rocks in the Lake Winnipeg 

 district, that are believed to be older than the Hudson River formation, 

 with the exception of a small but interesting series of Stromatoporoids, 

 which has yet to be studied. Most of the specimens are from limestones 

 which most probably represent the whole of the Utica and Trenton 

 formations, inclusive of the Galena, though they hold several fossils 

 elsewhere supposed to be restricted to the Hudson River group, but some 

 are from the few feet of passage beds already referred to, which- are pre- 

 sumed to represent the Birdseye and Black River limestone, immediately 

 beneath the limestones and at the summit of the sandstones. It is 

 thought desirable to consider the fossils of these limestones separately 

 from those of the transition beds, and to commence with the former. 

 The state of preservation of most of the fossils from these limestones is, 

 however, by no means favourable to their accurate specific or generic 

 determination. Most of the brachiopoda have no portion of the hinge 

 area of either valve preserved, and nearly all of the mollusca and 

 Crustacea are represented by mere casts of the interior of the shell or 

 crust. 



One of the most striking features in the fossils of the Winnipeg and 

 Red River limestones is the large size to which many of the specimens 



