450 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
whole of the head black, except the mandibles and a spot on the gula, 
which are red. Pro- and mesonotum with a black spot as in pratensis. 
Gaster black, with the base of the first segment reddish yellow. An- 
tennae and legs brown. 
Frema.E. Length 8.5-10 mm. 
Antennae shorter and thicker than in the worker. Head, excluding 
the mandibles, a little broader than long. 
Body densely punctate, head and thorax more coarsely, gaster more 
finely; head and thorax opaque, except the mandibles, which are 
coarsely striatopunctate. Clypeus delicately longitudinally striate. 
Gaster somewhat shining. 
Pilosity pale, sparse, and somewhat longer, pubescence even sparser 
and more indistinct than in the worker. 
Dark brown or black, mandibles except their borders, anterior 
portion of pronotum, inferior pleurae, venter and base of first gastric 
segment yellowish or reddish. Legs brown or blackish brown, coxae 
reddish. Wings not infuscated but merely tinged with yellowish at 
their bases. Veins and stigma brown. 
Mate. Length 9-11 mm. 
Mandibles tridentate. Head very broad and shorter than in rufa 
and sanguinea, eyes rather small, the antennae, and especially their 
scapes, shorter and much thicker. Petiole high and rather compressed 
anteroposteriorly, with a rounded superior border, which is scarcely 
or not at all excised in the middle. 
Body, including the mandibles and frontal area, opaque; gaster 
feebly glossy. 
Pilosity and pubescence grayish, the former sparse especially on the 
head and gaster, most conspicuous on the thoracic dorsum, the pubes- 
cence rather long and dense on the gaster. 
Body, legs, and antennae black; genital appendages with yellow 
bases and black tips. Wings colorless. 
Siberia, from the middle and southern portions of the Ural Moun- 
tains to Transbaikalia. 
The nests are described as similar to those of F. rufa and pratensis 
and in the Ural Mountains are located on the summits and slopes of 
hills which are overgrown with grass and scattered birches. The 
pupae are said by Ruzsky not to be enclosed in cocoons. 
The species is easily recognized by the peculiar coloring and robust 
antennae of all three phases. 
42. F. apELUNGI Forel. 
F. adelungi Forel, Ann. Mus. St. Petersbourg., 1904, 8, p. 384, o&; Ruzsky, 
Formicar. Imper. Ross., 1905, p. 420, co’; Emery, Deutsch. ent. zeitschr., 
1909, p. 189, o. 
