1906.] Wheeler, The Ants of the Grand Canon 345 



It is known to occur in Alaska, and in British America ranges as far 

 east as Labrador and Nova Scotia. 



27. Formica fusca subpolita Ma;yr.— Several colonies of this sub- 

 species were seen nesting under stones in the Kohonino Forest on the 

 rim of the canon. It is common in similar situations throughout 

 New Mexico, Colorado and California. 



28. Myrmecocystus melliger Forel. — A single colony of a dark 

 variety of the "honey ant", common in the deserts of southwestern 

 Arizona, was seen between the upper limit of the granite and the 

 Coleogyne zone, at an altitude of about 3000 feet. 



29. Camponotus maculatus vicinus Mayr var. nitidiventris 

 Emery. — Common in the Kohonino Forest on the rim of the canon, 

 where it forms populous colonies under large fiat stones or even 

 burrows in the open ground. In the latter case the nest-entrances 

 are obscure and widely scattered craters. Winged females and males 

 are common in the nests during May. Colonies extend down the 

 canon walls to an altitude of about 4000 feet. The variety is com- 

 mon at similar elevations in Arizona, New Mexico, and Colorado. 



30. Camponotus maculatus maccooki Forel. — Several colonies of 

 this ant were taken in the Kohonino Forest and down the walls of 

 the canon to an altitude of 5360 feet. Like the subspecies vicinus it 

 nests under flat stones or in the open soil and resembles in its habits 

 the var. sansabeanus Buckley of central Texas. I have taken it also 

 on the rocky elevations about Prescott, Arizona, and in the vicinity 

 of Manitou, Colorado. 



