1921] Canadian and. Arctic Spiders 165 



XOTES OX CANADIAX AXD ARCTIC SPIDEES. 



By J. H. Eaierton, 



Boston, Mass. 



Since the report on the spiders of the Canadian Arctic Expedi- 

 tion of 1913 to 1916, the wi'iter has had opportunity to examine a 

 considerable number of arctic spiders from the American Museum 

 of Xatural History of Xew York and from the Zoological Museum 

 of Copenhagen, Denmark, the latter including some from Iceland. 

 The Iceland spiders appear to be mainly species living in the 

 British Islands and Xorthern Europe, while those from Greenland 

 are for the most part Canadian, extending westward to Alaska 

 and Siberia, and southward through the bogs of Canada to the 

 mountain tops of Xew England and the Eocky Mountains of 

 Canada and the western United States. The following notes give 

 the results of comparisons of spiders from Greenland with those 

 of the same or similar species living in Canada and the mountains 

 of the northern United States. 



Hilaira (Erigone) glacialis, Thorell, ISTl, Spiders of Spitzber- 

 gen and Beeren Islands. 



Erigone vexatri.r (Camb. 1877), Koch 1879, Spiders of Siberia 

 and Xova Zembla. 



Hilaira glacialis Kulczynski 1908, Spiders of Eussian Expedition 

 to Xew Siberia Islands. 



Spitzbergen, Siberia. 



CoUinson Point, Alaska, Canadian Arctic Expedition. 



Saunders Island, West Greenland. Crocker Land Expedition. 



Hilaira (Erigone) laeviceps, Koch, 1879. 



Hilaira Iceviceps, Kulczj-nski, 1908. 



Tmeticns hrunneus, Emerton, 1882, Connecticut Academy. 



Siberia. 



Xome, Alaska, Canadian Arctic Expedition. 



Banff, Alberta, Canada. Sulphur Mt., X. B., Sanson. 



!Mt. "Washington, X. H. Emerton, Slosson. 



East Greenland, Angmagsalik, Q>Q)° north, Kruusa 



Lophocarenum {Erigone) barbata, Koch, 1879. 

 Diplocephalus harhatus, Kulczynski, 1908. 

 Siberia. 



