THE NAUTILI'S. 3 



Elsewhere in Canada, V. Leivisii, as recently identified by Dall, 

 is now known to occur at many localities from Gaspe to Alberta, and 

 as far to the northeastward as Fort Chimo, Ungava. 



A few specimens, in the museum of the Canadian Survey, which 

 Dall thinks are " probably the true V. sincera of Say, or a variety 

 of it," were collected on the island of Anticosti by Professor Macoun 

 in 1884, and on the Attawapiskat and Kawinogans Rivers by Mr. 

 Mclnnes in 1904. Those from the Kawinogans River have the 

 outer half of the last volution free and partially uncoiled. 



Limncea stagnates appressa Say. 



Stewart River, near Mayo River ; two specimens. 



Limncea Randolphii Baker. 



Frances Lake, eleven fine and large specimens ; Finlayson Lake, 

 eleven specimens, mostly immature ; Lewes River, one small speci- 

 men ; and Lake Marsh, Lewis River, seventeen fine and mostly 

 adult shells. 



Limncea palustris Muller. 



Frances Lake, two specimens. 



Limncea Vahlii Beck. (Dall.) 



Frances Lake, nine specimens; Finlayson Lake, twelve specimens. 



Limncea arctica Lea. (Dall.) 



= Limnsea Pingeli Beck, var.; (Dall.) 



Stewart River, near Mayo River, two specimens. 



Planorbis trivolvis Say. 



Stewart River, near Mayo River ; seven specimens of a rather 

 large, depressed and thin-shelled form of this species, with the spiral 

 angulation obsolete. 



Segmentina armigera (Say). 



Stewart River, near Mayo River ; one specimen. 



Physa sp. indet. 



Finlayson Lake ; one very immature specimen. 

 Ottawa, April 5, 1905. 



