456 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Mate. Length 8-8.5 mm. 
Head decidedly broader than long, narrowed in the region of the 
cheeks, which are short and flat; posterior border of head straight, 
posterior corners broadly rounded. Eyes large, suboblong. Mazxil- 
lary palpi 5-jointed. Mandibles 4-tootbed. Clypeus convex, sub- 
carinate, with entire, slightly reflected anterior border. ‘Thorax and 
gaster of the usual shape, the former distinctly broader than the head. 
Petiole broad and low, with thick, rounded, transverse upper border. 
Body subopaque; pleurae, scutellum, metanotum, and gaster more 
shining. Mandibles striatopunctate. Head and thorax very finely 
and densely punctate, gaster shagreened, with rather coarse, scattered 
piligerous punctures on its upper surface. 
Hairs and pubescence grayish, more abundant than in the worker; 
the hairs very long on the epinotum, petiolar border, basal gastric seg- 
ment and venter; somewhat shorter on the clypeus and pronotum and 
still shorter on the upper surface of the gaster. Eyes hairless. 
Black; borders of mandibles, tibiae, tarsi, and articulations of legs 
brownish, or in some specimens yellowish. Genitalia sordid yellow, 
the tips of the appendages not infuscated. 
Host. Unknown; probably F. fusca var. argentea or var. neo- 
clara. 
TYPE LOCALITY.— Colorado: Manitou (Wheeler). 
Colorado: Red Rock Canyon, near Colorado City (Wheeler). 
South Dakota: Harding County (S. S. Visher). 
The female F. comata, though it superficially resembles several of 
the foregoing species, is nevertheless very distinct in sculpture, color, 
and pilosity. It is much more difficult to distinguish the worker, 
as it is extremely like the corresponding phase of F. ciliata, differing 
only in having a somewhat more hairy body, darker gaster and in 
large specimens in having the petiole narrower and with its superior 
border more pointed and produced upward. The worker obscuripes 
and aggerans have more abundant and more erect hairs on the thorax 
and the infuscation of workers of all sizes is much more pronounced 
and extensive. The male comata is distinguished from the male 
ciliata by its quadridentate mandibles, pale genitalia, and somewhat 
paler wings. 
The nests of comata are very similar to those of cilzata, being under 
clusters of stones or about stumps and logs. These objects are rather 
heavily banked or even covered with vegetable detritus. The winged 
phases were taken July 26 and August 14. 
