a a ens ae 
WHEELER: ANTS OF THE GENUS FORMICA. 52S 
105. F. crnEREA CINEREA var. IMITANS Ruzsky. 
F. cinerea var. imitans Ruzsky, Ants envir. Aral Sea (Russian), 1902, p. 10, 
nota 8; Zool. jahrb. Syst., 1902, 17, p. 472; Formicar. Imper. Ross., 
1905, p. 405, 8 9. 
F. fusca cinerea var. imitans Emery, Deutsch. ent. zeitschr., 1909, p. 199. 
WorkeER. Length 5-6.5 mm. 
Pubescence dense, giving the body a silky luster. Erect hairs 
rather abundant, sparse on the thorax, more numerous on the gaster, 
long on the gula. 
Color pale, resembling that of F. rufibarbis, the body being light 
reddish brown, the gaster dark brown, the legs only slightly darker 
than the thorax. Head and pronotum above each with a brown spot, 
or the whole body dark brown above. Small workers darket. 
Ssamara and Orenburg in Western Siberia, Kirghis Steppe, Cauca- 
sus. 
106. F. CINEREA CINEREA var. ARMENIACA Ruzsky. 
F. cinerea var. armeniaca Ruzsky, Formicar. Imper. Ross., 1905, p. 406, 8 9. 
F. fusca cinerea var. armeniaca Emery, Deutsch. ent. zeitschr., 1909, p. 199. 
WorkKER. Length 5-7 mm. 
Hairs not as numerous as in the typical cinerea; color darker, the 
head, gaster, and funiculi dark or blackish brown; petiole, scapes, 
mandibles, and legs brown. Specimens of still darker color and 
somewhat more abundant pilosity and pubescence occur and form a 
transition to the typical form. 
FEMALE. Length 9-11 mm. 
Resembling the typical form except in the gaster, which is hairless 
and shining. 
Caucasus Mountains. 
107. F. CINEREA CINEREA var. ALTIPETENS, var. nov. 
Worker. Length 3.5-6 mm. 
Shape of thorax like that of the worker fusca, with the epinotum 
more angular and its declivity less sloping in profile, the mesoépinotal 
constriction deeper and the pro- and mesonotum more convex. Peti- 
ole broad, seen from behind cordate, the border notched in the middle 
and much sharper than in the typical cinerea. 
Surface of body a little more shining, being more delicately sha- 
greened. Frontal area opaque. Mandibles subopaque, coarsely 
striatopunctate. 
