524 WHEELER. 



Mexico: CoHma, 7500 ft. (C. H. T. Townsend). 



This species is also very common throughout North America east of 

 the Mississippi River from Southern Ontario to St. Augustine, Florida, 

 where it was taken by Prof. C. T. Brues. It belongs properly to the 

 transition zone and is, according to my observations, always associated 

 with oak trees. In the Eastern States the var. testacea Emery descends 

 into the Upper and Lower Austral. It is one of the most abundant 

 ants in the sandy pine-barrens of New Jersey and at low altitudes in 

 the mountains of North Carolina. As Emery has shown, the European 

 nitem Mayr is merely a subspecies of imparls with darker wings in the 

 male and female (Deutsch. Ent. Zeitschr. 1910). This author has 

 called attention to the remarkable distribution of the species, the 

 subsp. nitens, the only known Old World form, being confined to 

 Carinthia, Styria, the Balkan Peninsula, Asia Minor and the eastern 

 shores of the Black Sea, whereas the typical form of the species has a 

 very wide range in North America. 



78. Lasius niger L. var. sitkaensis Pergande. 



Alaska: Sitka, type locality (T. Kincaid). 



British Columbia: Glacier (Wheeler); Dowie Creek and Rogers 

 Pass, Selkirk Mts. (J. C. Bradley). 



Manitoba: Aweme (N. Criddle); Treesbank (C. G. Hewitt). 



Ontario: Kenora (J. C. Bradley). 



Washington: Olympia (T. Kincaid); Seattle (Wheeler); Pullman 

 (W. M. Mann). 



Oregon: Corvallis. 



Idaho: Troy (W. M. Mann) ; Moscow (J. M. Aldrich). 



Montana: Yellow Bay, Flathead Lake (C. C. Adams). 



South Dakota: Elk Point (E. N. Ainslie). 



California: Giant Forest, 6500 ft. (J. C. Bradley); Lake Tahoe, 

 6000-7000 ft. and Camp Curry and Glacier Point, 4000-8000 ft. 

 Yosemite (Wheeler); King's River Canyon (H. Heath). 



Colorado: Florissant, 8200 ft., Cheyenne Canyon and Williams 

 Canyon, 8000 ft. (Wheeler); Denver (E. S. Tucker); Platte Canyon, 

 10,000 ft. and Rico, 10,000 ft. (E. J. Oslar). 



Nova Scotia: Port Maitland (W. Reiff). 



Maine: South Harpswell (Wheeler); Reed's Island, Penobscot Bay 

 (A. C. Burrill). 



As shown by the list of localities, this form is very widely distributed 

 through the Canadian zone. The worker and female are larger than 

 any of our other North American forms of L. niger (3.5-4 mm. and 



