io6 The Ottawa Naturalist. 



species of Stephanella resembling that discovered by Dr. Ami in the 

 Utica shale at Ottawa. A new species of Chondriles is also noticed, 

 and illustrations are given of the varied and curiously constructed 

 anchoring-rods of some of the species. 



In an appendix, a complete classified list is given of species dis- 

 covered at this place, with fi.^ures and short characters. 



Palceozoic Outliers of the Ottawa River Basin. By R. W. 

 Ells, LL.D. 



At many points throughout the area drained by the Ottawa, but 

 more particularly to the south of that river, outliers of fossiliferous 

 rocks,- larg-ely calcareous, are found. Some of these areas are quite 

 extensive, embracing several square miles, while others are limited to a 

 few hundred square yards. The area from the vicinity of Ottawa City 

 to the south and east is continuous with the great series of deposits 

 found throughout the St. Lawrence River basin. 



In most of these rocks an abundance of iussil forms are found. 

 Collect'ons of these have been made from time to time, both by mem- 

 bers ot the staff of the Geological Survey and by other gentlemen 

 interested in their study. These collections have been carefully 

 examined and show that the formations represented in this basin range 

 from the Potsdam formation upward to the Lorraine shales, both 

 inclusive, thus embracing the entire series of tormations pertaining to 

 the Cambro-Silurian system as now understood by the Canadian 

 Land Survey. Black River and Trenton forms are particularly well 

 represented at several points. These outHers are presumably the 

 remains of a once largely developed series of fossiliferous rocks which 

 rested upon the older Crystalline-, and which probably occupied much 

 of the area between the St. Lawrence and the upper Great Lakes. 



" On the Fossil Remains of the Ottawa Palceozoic Basin. By H. 

 M. Ami, M.A , F.G S. 



This paper which accompanied the preceding one by Dr. Ells, 

 contained an extensive series of succinct reports upon the palseonto- 

 logical characters of the various geological formations comprised in the 

 OUawa Palteozoic Easin. Useful systeinatic lists of fossils from the 

 Lake Temiscamingue outlier, from Paquette's Rapids, Bonnechfere 

 River, from Ottawa and vicinity, as far east as Lachute, have been 

 prepared and afford a means of ascertaining the faunas and fauna! 

 relations of the various members of the Paleozoic formations included 

 in the Basin. Tlie Silurian and Ordovician or Cambro-Silurian systems 

 are the only two systems recognized. 



