16 G Canadian Arctic Expedition, 1913-1918 



5 males and 13 females from brackish pond at Bernard harbour, July 10, 

 1916. 



17 males and 9 females from waterhole on beach west of Bernard harbour, 

 July 14, 1916. 



32 immature ones from brackish pond at Bernard harbour, July 15, 1915. 



3 males and 8 females from same pond as preceding ones, July 19, 1915. 



One young male and 30 females from same pond as preceding ones, August 

 4, 1915. 



5 males and 9 females from lake inland at Bernard harbour, August 10, 

 1915. 



12 males and 8 females from pond on ridge slope at Bernard harbour, 

 August 23, 1915. 



Other American Records (excluding Greenland) 



Puddle at White Horse, Yukon Territory, June 7, 1912, J. M. Jessup coll. 

 (Pearse, 1913, p. 2). 



About 55 males and 50 females from tundra pools at Point Barrow, Arctic 

 Alaska, July 10, 1882; J. Murdoch coll.i (Murdoch, 1885, p. 149). 



About 70 males and 125 females from tundra pools at Cape Smyth (Point 

 Barrow) Arctic Alaska, July 16, 1883, and other dates; J Murdoch coll.^ (Mur- 

 doch, 1885, p. 149). 



Muskeg lake, coastal plain of Arctic ocean (Lat. 69° 40' N., Long. 141° W.), 

 July 25, 1912; J. M. Jessup coll. (sex and numbers not given by Pearse, 

 1913, p. 2). 



Fragments of 2 males and 2 females from (pond at?) Cape Krusenstern, 

 Northwest Territories, August, 1849; J. Rae coll.^ (Baird, 1852, p. 29). 



Gjoa-Havn, on the south side of King William island, at the following dates: 



A few specimens on August 12, 1904. (2 about 10 mm. long females.)' 



5 males and 7 females, 13-15 mm. long, on August 23, 1904, and August 6, 

 1905.' It occurred here together with Lepidurus arcticus (Pall.) (Gjoa- 

 expedition,) .^ 



About 1 dozen specimens from FuUerton, west side of Hudson bay, "Nep- 

 tune" Expedition, 1903-04, A. Halkett coll.' (Halkett, 1906, p. 368). 



2 males and 4 females from a pond at Point St. Charles (Montreal), Que., 

 May-June, about 1890; E. Ardley coll.' (Johansen, 1921, p. 27, "Can. Field-Nat."). 



28 males and 4 females (1| to 2 cm. long) from freshwater-pools on rocks, 

 mouth of Koksoak river. Fort Chimo, Ungava, L. M. Turner coll. (no date) ' 



2 males and 1 female (about 2 cm. long) from Indian harbour, Hamilton 

 inlet, Labrador, August 12, 1908; O Bryant coll.' 



Specimens from pools on rocks at Indian Tickle and Tub island, Hamilton 

 Inlet, Labrador, August 7, 10, 1864; A. S. Packard coll. (Packard, 1883, p. 337). 



Vicinity of the winter-quarters upon Johan peninsula, east side of Ellesmere 

 island (Lat. 78° 45' N., Long. 75° W.), as follows: 



3 males from bay near Rice strait, August 18, 1898. 



Many specimens from a freshwater pond, August 22, 1898, (about 1| cm. 

 long.)' 



Young specimens from brackish water. Winter-quarters, June 17, 1899. 



Young specimens from brackish water. Winter-quarters, June 29, 1899. 

 (Second Norwegian Arctic Expedition in the "Fram".)^ 



23 males and 7 females (1 to 1| cm. long) from freshwater pond at Payer 

 harbour. Cape Sabine, east side of Ellesmere island, Princeton Expedition, 1899, 

 (Ortmann, 1901, p. 145) ' 



1 Specimens examined by me (F. J.). 



2 Letter of April, 1921, from Prof. G. O. Sars to me. 



