538 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Utah: (Amer. Mus. Nat. Hist. Coll.). 
Colorado: Colorado Springs, Colorado City, Manitou, Florissant, 
Wild Horse, Buena Vista (Wheeler); Boulder (T. D. A. Cockerell). 
New Mexico: Las Vegas (EK. Tuttle, K. Tipton); Glorieta, Pecos 
(T. D. A. Cockerell); Albuquerque (Wheeler); Las Valles (Miss 
Mary Cooper); Alamogordo (G. v. Krockow). 
Arizona: Ash Fork, Coconino Forest at the Grand Canyon, Wil- 
liams (Wheeler); Flagstaff (F. E. Pratt). 
Wyoming: Carbon County (Amer. Mus. Nat. Hist. Coll.). 
Washington: Almota (A. L. Melander); Pullman (R. W. Doane,. 
W. M. Mann); Wawawai (W. M. Mann). 
Ontario: Guelph (Wheeler). 
Quebec: Kingsmere (Wheeler). 
Nova Scotia: Digby (J. Russell). 
British Columbia: Vermillion Pass, 5,000-6,500 ft. (E. Whymper). 
Alberta: (E. Whymper). 
Emery regarded this ant as a variety of F. subpolita but it is cer- 
tainly quite distinct, though its worker resembles the small workers 
of the latter species. F. neogagates, however, differs in its more 
abundant, more delicate and paler pilosity and in the proportions of 
the basal funicular joints of the worker. The male differs greatly 
from the male subpolita in color and in the structure of the genitalia. 
I had referred the species to Proformica before I noticed that Emery 
regarded his F’. lasioides, which is merely a subspecies of neogagates, as 
belonging to this subgenus. In certain respects it is a connecting link 
between Proformica and the subgenus Formica, the frontal carinae not 
being abbreviated as in the Old World species of the former group. 
F’. neogagates is a very timid ant which nests in small colonies 
under stones in open, often very dry and stony country. In the 
Rocky Mts. its colonies are abundant at altitudes between 6,000 and 
8,000 ft., in the Eastern States it is much rarer and more sporadic 
and, though preferring the hills of the Appalachian system, may de- 
scend almost to sea level. It is, however, properly a subboreal 
species and even in the latitude of New York is rarely found at low 
elevations. Like the forms of F. fusca it is readily enslaved in all 
parts of its range by the various subspecies of F’. sanguinea. 
118. F. (P.) NEOGAGATES NEOGAGATES var. MORBIDA, var. nov. 
WorkKeER. Length 3-4 mm. 
Differing from the typical neogagates in the smaller average size and 
in color. The body is reddish or brownish yellow, the legs and an- 
