ol. 
10. 
= 
i 
WHEELER: ANTS OF THE GENUS FORMICA. 393 
Erect hairs sparse on upper surface of head, thorax, and petiole. 
truncicola integroides Emery. 
Erect hairs on upper surface of head, thorax, and petiole dense 
and abundant. 
truncicola integroides var. coloradensis, var. nov. 
Females. 
3) ay niyesialiaea Perv iS) ee cee aan Ala a mg CARDS Se 2 
DARI HORUS OR tte Gea bo oma in kag Bn ul aie we rae A ane 5 
Frontal area opaque; antennal scapes short and stout. 
uralensis Ruzsky. 
Frontal area shining; antennal scapes longer and more slender. .3 
Gaster very smooth and shining, scarcely pubescent. . rufa Linné. 
Gaster opaque or subopaque, distinctly pubescent............ 4 
Gaster opaque, densely pubescent, brownish black, except the ex- 
treme base and tip, which are reddish. . . .rufa pratensis Retzius. 
Gaster subopaque, brown with red base, or red with fuscous 
posterior margins to the segments....... truncicola Nylander. 
Antennal scapes with numerous erect or suberect hairs....... 6 
Antennal scapes without erect hairs, or with only a few on the 
“eH E [OTRAS TIL = amin Ae a ORE ee Pere oP if 
Hairs on scapes and legs oblique or suberect....oreas Wheeler. 
Hairs on scapes and legs more erect; on the body coarser and 
PIVOEE, BOUTON G oi oe ge «sae pee 28 eke oreas var. comptula, var. nov. 
Gaster invested with very long, appressed hairs...........-. 8 
Gaster not invested with such hairs... ..........--+-s-)-- 10 
Gaster yellowish red like the head and thorax, its long, appressed 
Hains Hooked, or CUrvVEd. ab Lhelr TIPS... 6c. meee tee 9 
Gaster blackish brown, except the base and anal region; its 
long, appressed hairs not curved at their tips.. .comata Wheeler. 
Petiolar border with a fringe of very long hairs... .ciliata Mayr. 
Petiolar border without a fringe of long hairs. 
criniventris Wheeler. 
Head and thorax very smooth and shining, petiole with trans- 
Metvely etiMcatea sOperion border... os tmpcen ty °° 11 
Head and thorax opaque or subopaque, petiole not truncated 
Ns. pc ei ie nn gs Rema Ra 13 
270d Sn ial aaa lie ead Aaa ao i RRM oe CeO RP 12 
Gaster red with brown posterior borders to the segments. 
dakotensis var. specularis Emery. 
