et See a 
WHEELER: ANTS OF THE GENUS FORMICA. 557 
Illinois: Algonquin (W. A. Nason); Rockford (Wheeler). 
Colorado: Manitou, Colorado Springs, Colorado City (Wheeler). 
New Mexico: Las Vegas (Wheeler). 
Quebee: Hull, near Ottawa (Wheeler). 
Ontario: Grimsby (Wheeler). 
Emery regards as the type of this subspecies “workers, which have 
about the color of the subsp. schaufussi,” but such individuals are too 
pale to represent the subspecies properly, which is decidedly darker. 
It is in fact often so dark as to merge into fuscata. Such transitional 
forms are also cited by Emery from South Dakota but he evidently 
regarded them as fuscata. Emery refers the male and female described 
as schaufussi by Mayr to this subspecies. 
F. nitidiventris closely resembles schaufussi and incerta in habits, 
but nests in more shady situations, along the borders of woods, ete. 
In geographical range it seems to coincide very closely with incerta, 
from which it is sometimes distinguishable only with difficulty. 
138. F. (N.) PALLIDEFULVA NITIDIVENTRIS var. FUSCATA. Emery. 
F. pallidefulva subsp. fuscata Emery, Zool. jahrb. Syst., 1893, 7, p. 656, 8 9. 
F. pallidefulva nitidiventris var. fuscata Wheeler, Bull. Amer. mus. nat. hist., 
1904, 20, p. 370. 
WorkKER. Length 4-6 mm. 
Characterized by deeper coloration and feebler pilosity. The body 
is dark reddish brown or blackish, the anterior portion of the head and 
legs paler; mandibles, antennae, tarsi, tibiae, and articulations of legs 
red or yellowish. Tips of funiculi infuscated. The surface of the 
body is sometimes more sharply shagreened and therefore somewhat 
more opaque than in nztidiventris, the hairs even sparser on the head 
and usually wanting on the thorax. The pubescence is very short 
and sparser and much as in nitidiventris. 
FEMALE (DEALATED). Length 7-9 mm. 
Dark reddish brown or blackish; mandibles, scapes, pronotum, 
petiole, legs, and sometimes also the mesonotum yellowish. Hairs 
more abundant and longer than in the worker, present also on the 
thoracic dorsum. Surface of body shining, much as in the female of 
nitidiventris. 
TypE LocaLity.— Pennsylvania: Beatty (P. J. Schmitt). 
North Carolina: Black Mountains (Wm. Beutenmiiller); Lake 
Toxaway (Mrs. A. T. Slosson). 
Georgia: Thunderbolt, Savannah (J. C. Bradley). 
New Jersey: Halifax (Wheeler). 
