140 THE NAUTILUS. 



rence in Alberta, at a considerable distance from the line of railway, 

 leads me to suppose that it is truly indigenous, and in this opinion I 

 am confirmed by Mr. Walker's observations. 



While on the subject of Planorbis I should like to call attention 

 to the occurrence of another shell in southern Alberta (recorded in 

 the paper referred to above), namely, Planorbis umbilicatellus. This 

 record seems to have been overlooked by Mr. Vanatta when writing 

 on the distribution of P. wnbilicaiellus in the last volume of THE 

 NAUTILUS. 



By the way : The Ottawa Naturalist is one of our best Canadian 

 natural history magazines, and a good many papers on Canadian 

 Conchology have been published therein during the last few years. 



Nanaimo, B. C. 



ISAAC LEA DEPARTMENT. 



[Conducted in the inti-trst of tho Isnnr Lo:i ConHiolo^irul <1iU|iTrr of the Agassiz Associa- 

 tion by its General Sem-lai y, Mrs. M. Uurtim Williamson.] 



At this writing the volume of Transactions is still in California. 

 Promptness in forwarding the book will be appreciated by the Gen- 

 eral Secretary, as well as by our members whose homes are in the 

 eastern States. 



The name of Mrs. V. R. Hayward, Spokane, Wash., is added to 

 our Chapter Roll. 



Mr. ,T. .1. White's gift of shells to our members, mentioned in THE 

 NAUTILUS, is greatly appreciated. 



FOSSILS OF DEAD MAN'S ISLAND. 



[From the report of Hon. Delos Arnold. From the Transactions of the Isaac Lea 

 Conchological Chapter for 1896.] 



In submitting my annual report as Secretary of the Fossil Sec- 

 tion of the Chapter, I have to regret that so little progress has been 

 made during the past year along the lines of tliis Section of the 

 Chapter. 



While the work during the past year, so far as the main concho- 

 logical work is concerned, is very gratifying, showing, as they do, 

 an increasing interest in the study of the science and a commend- 

 able activity in the collecting of specimen?, the Fossil Section has 



