504 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
87. F. FUSCA FUSCA var. SUBAENESCENS Emery. 
F. fusca var. subaenescens Emery, Zool. jahrb. Syst., 1893, 7, p. 659, 8 ; Forel, 
Ann. Soc. ent. Belg., 1904, 48, p. 153, 8; Wheeler, Ants, 1910, p. 570. 
°F. fusca var. densiventris Viereck, Trans. Amer. ent. soc., 19038, 29, p. 73, 8. 
Worker. Length: 4-7 mm. 
Very closely related to the typical fusca but differing in having the 
body, and especially the gaster more shining. The gaster is finely 
shagreened and also finely punctate. The pubescence is much sparser 
than in subsericea and usually somewhat sparser than in the typical 
fusca, so that the surface is clearly visible. The hairs and pubescence 
are yellowish. Body black, with distinct bronzy reflections. Man- 
dibles, antennae, and legs dark brown or dark red; tibiae and femora, 
except at the articulations, often darker. 
FremMaLe. Length 8-10 mm. 
Resembling the worker in color, sculpture, and pilosity, but the 
gaster, posterior part of head and mesonotum even smoother and more 
shining. Wings rather deeply and uniformly infuscated, but slightly 
less than in the var. subsericea. Veins and stigma brown. 
Mae. Length 8-10 mm. 
Closely resembling the male of the typical fusca, but the wings some- 
what more deeply infuscated and the gaster more shining and more 
sparsely and delicately pubescent. Head and thorax black, gaster 
dark brown; mandibles, legs, genitalia, and scapes clear yellow; funi- 
culi light brown. 
TYPE LOCALITY.— South Dakota: (Th. Pergande). 
Utah: Little Willow Canyon (R. V. Chamberlin). 
Colorado: Manitou, 7,000-8,000 ft., Colorado City and Pike’s 
Peak, 10,000—11,000 ft. (Wheeler); Pike’s Peak, printing office, 10,000 
feet, Ward, 9,000 ft. (T. D. A. Cockerell). 
New Mexico: Old Pecos Pueblo, Pecos, Top of Las Vegas Range, 
11,000 ft. (T. D. A. Cockerell); Barela Mesa (Miss Anna Gohrman); 
Manzanares (Miss Mary Cooper); Harvey’s Ranch, Las Vegas Range, 
9,600 ft. (Miss Ruth Reynolds); Cloudcroft (H. Skinner). 
Montana: Nigger Hill, Powell County (W. M. Mann). 
California: King’s River Canyon, 8,000 ft. (H. Heath); Alta 
Peak, Sequoia National Park, 9,500-11,000 ft. (J. C. Bradley). 
Washington: San Juan Island (W. M. Mann); Brinnon, Hoods 
Canal (J. C. Bradley). 
Idaho: Troy (W. M. Mann). 
Maine: Lower Goose Island, Casco Bay (Wheeler). 
New Hampshire: Mt. Washington (C. S. Bacon); Franconia (Mrs. 
A. T. Slosson). 
