1906] Land and Fresh Water Shells. 119 



in British Columbia." It is not included in the Rev. G. W. 

 Taylor's " Preliminary Catalogue of the Marine Mollusca of the 

 Pacific Coast of Canada, with notes upon their distribution/' in the 

 Transactions of the Royal Society of Canada for 1895, though this 

 paper gives a list of the land and fresh water, as well as of the 

 marine shells of British Columbia, and quite recently Dr. Dall 

 writes that he can find no specific record oi Gonidea from that 

 province in the United States National Museum. 



In March, 1906, however, two dead but characteristic and 

 separate valves, of shells that, in the writer's judgment, are clearly 

 referable to this species, were presented to the Museum of the 

 Geological Survey, by Mr. G E Winkler, of Penticton, who 

 writes that he had recently found them "in the Okanagan River, 

 near where it leaves Okanagan Lake, at Penticton." And, still 

 more recently, in August last, he has collected and kindly forwarded, 

 four perfect and adult, living but otherwise similar shells, from 

 the same locality. This would seem to be the first definitely 

 Canadian record for this well known California and Idaho species. 



Pisidium Idahocnse, Roper. 



In the Museum of the Geological Survey there are two speci- 

 mens, one perfect one and a single valve, of this species, which 

 were collected at Fort George, "at the confluence of the Fraser 

 and Nechacco rivers, B C," by Dr. G. M. Dawson in 1875. This 

 is a previously unrecorded locality for this apparently rather rare 

 species. 



Gasteropoda. 



Polygyra ptychophora (Brown). 



Helix ptychophora, A. D. Brown, 1870. 



In the same museum there are a few good specimens of this 

 species, from the following localities in British Columbia. Elk 

 River, in the Crow's Nest Pass, collected by J. B. Tyrrell in 1883 ; 

 Sproat, collected by Professor Macoun in 1890 ; and Trail, col- 

 lected by W. Spreadborough in 1902. 



Dr. Dall writes that similar specimens from Mission Junction 

 (43 miles east of Vancouver, on the main line of the Canadian 

 Pacific Railway) have recently been received at the United States 

 National Museum. 



