WHEELER: ANTS OF THE GENUS FORMICA. 453 
Hairs golden yellow, short, and erect, those on the clypeus and man- 
dibles rather coarse. Upper surface of head naked, gula with a few 
erect hairs. Eyes bare. Thorax covered with erect hairs, except the 
mesonotum, mesopleurae, and basal epinotal surface, which are naked. 
Petiole below and along its border with a fringe of short hairs, also with 
a few hairs on its anterior and posterior surfaces. Gaster invested 
with numerous uniformly distributed, short, suberect, obtuse hairs, 
which are not longer on the terminal than on the basal segments. 
Legs without oblique hairs, except the customary row on the flexor 
surfaces of the tibiae. Pubescence grayish, rather long and sparse 
on the head, thorax, and legs, on the gaster very dense and concealing 
the surface. 
Head, thorax, and petiole of largest workers rich yellowish red, 
mandibles and clypeal sutures darker. Gaster brown, but appearing 
gray on account of the dense pubescence, anal segment and often also 
the venter and the base of the first segment, yellow. Antennae and 
legs reddish yellow, funiculus towards the tip, coxae, femora, and often 
also the tibiae, dark brown. The smallest workers usually have the 
posterior portion of the head, thoracic dorsum, and border of petiole 
clouded with black or dark brown. In some small specimens the whole 
body, excepting the mandibles and anterior portion of the head, is 
uniformly infuscated. 
FreMaLkE. Length 6-8 mm. 
Thorax rather small, somewhat narrower than the head. Petiole 
broadly rounded, its superior border sharp, but not produced in the 
middorsal line as in the worker. 
Mandibles subopaque, striatopunctate. Body and appendages 
smooth and shining, especially the head, mesonotum, and scutellum, 
which are very glabrous. | 
Pilosity extraordinary, consisting of very long, golden yellow hairs, 
which have a tendency to curl at their ends. These hairs are absent 
on the upper surface of the head, the mesonotum, and legs, excepting 
the coxae. They are long and conspicuous on the mandibles and 
clypeus, on the latter scattered over the disc and also fringing the an- 
terior border. Gula with long, appressed hairs. Remainder of body, 
excepting the nude portions above mentioned, covered with long woolly 
hairs which form a prominent fan-like fringe on the border of the petiole. 
On the gaster they are long and abundant, appressed overlapping and 
curled at their tips, so that this region of the body appears opaque, 
in marked contrast to the head and mesonotum. Antennae and legs 
covered with minute, inconspicuous pubescence, flexor surfaces of 
fore femora with flexuous hairs, corresponding surfaces of middle 
tibiae each with a single row, hind tibiae with two rows of stiff hairs. 
Color also unusual; rich reddish yellow throughout; only the termi- 
nal half of the funiculus, the mesonotum, the adjacent portion of the 
