MOUNTAIN ANTS OF NORTH AMERICA. 533 



I took many workers of this species in Miller Canyon, Huachuea 

 Mts., 5000 ft., during November 1910 and received additional material 

 from j\Ir. Biedermann, who took it in Carr Canyon, and from Dr. 

 W. M. Mann who took it in Ramsay Canyon in the same mountain 

 range. The subspecies is very easily recognized by its larger eyes, 

 peculiar pilosity and very smooth surface. 



96. Lasius {Acanthomyops) interjcdus subsp. mcxicanus Wheeler. 

 I have recently described this subspecies from specimens of all 



three phases taken by Dr. Mann at Guerrero Mill in the State of 

 Hidalgo, Mexico, at an altitude of 8500-9000 ft. 



97. Lasius (Acanthomyops) claviger Roger. 



I have seen only a few specimens of this very common eastern species 

 from the west, a worker taken at Old Pecos Pueblo, New Mexico, by 

 Prof. Cockerell and several workers and females taken by Dr. Mann 

 at Helena, Montana. In Massachusetts and Connecticut claviger 

 is the most abundant Acanthomyops. The small subspecies of inter- 

 jectus described above, show that the species is by no means so distinct 

 from claviger as we had supposed. The small form described by 

 Emery from the Eastern States as claviger var. subglaber should be 

 regarded as a subspecies. I have taken all three phases of it at Rock- 

 ford, 111., and on Great Blue Hill, near Boston, Mass., and have seen 

 specimens from the District of Columbia (cotj^pes from Pergande), 

 Delaware Co., Pa. (Cresson) and Algonquin, 111. (W. A. Nason). 

 At first sight this form closely resembles interjectus subsp. coloradensis 

 in size, but the workers and females of this form are much more pilose, 

 the antennal funiculi are distinctly less clavate and the female is much 

 darker. 



. 98. Formica sanguinea Latr. subsp. suhnuda Emery. 



British Columbia: Field and Emerald Lake (Wheeler). 



Alberta: Lake Louise and Banff (Wheeler). 



California: Fallen Leaf Lake and Glen Alpine Springs, near Lake 

 Tahoe (Wheeler); Sugar Pine, Madera County (J. C. Bradley). 



Idaho: Troy (W. M. Mann). 



Washington: Seattle (Wheeler). 



Colorado: San Juan Mts., 12,000 ft.. Bullion Peak, Park Co., 13,000 

 ft., and Gibson's Gulch, Hayden Peak, 10,000 ft. (E. J. Oslar) ; Tol- 

 land (W. W. Robbins). 



In my "Revision of the Ants of the Genus Formica" I have cited 



