“J 
8. 
10. 
11. 
14. 
15. 
16. 
ri. 
WHEELER: ANTS OF THE GENUS FORMICA. O91 
Head, thorax, petiole, and legs brown; hairs sparser. 
rufa var. meridionalis Ruzsky. 
Head, thorax, and petiole red; black spots on head and thorax 
large, those on the pro- and mesonotum confluent. 
rufa pratensis Retzius. 
Head, thorax, petiole, and legs darker and more brownish; black 
on thorax more extensive.. .rufa pratensis var. nigricans Emery. 
Flexor surfaces of tibiae with numerous erect or suberect hairs. .9 
Flexor surfaces of tibiae without erect hairs................ 11 
Color of head, thorax, and petiole bright, yellowish red....... 10 
Color and pilosity transitional to pratensis. 
rufa pratensis var. truncicolo-pratensis Forel. 
Hairs on head and thorax abundant; eyes hairy; gaster dark 
brown, with red basal spot: ..205. 2... truncicola Nylander. 
Hairs absent on head and thorax; gaster opaque, black, with red 
COATS of Aes ears AL Gr wah <n truncicola dusmett. Emery 
Bright red; upper surface of head and clypeus hairy. 
truncicola var. yessensis Forel. 
Deep, dull red; upper surface of head and clypeus without hairs. 
truncicola var. sinensis, var. Nov. 
Antennalseapes pith erectihainsig ii 6.4. esa ei ad Se 13 
Antenna) scapes withoutjerect ‘hairs: 0... 0.0. ee ee. 14 
Head and thorax bright yellowish red; legs reddish brown. 
oreas Wheeler. 
Red portions of body darker; legs dark brown; erect hairs on all 
parts of the body more abundant, shorter on gaster. 
oreas var. comptula, var. nov. 
Cheeks and posterior corners of head very convex and rounded; 
petiole narrow below when seen from behind, broadened above, 
with straight transverse superior border.................. 15 
Cheeks and posterior corners of head less convex and rounded, 
petiole not transversely truncated above................. i 
Erect hairs absent on gula and upper surface of head, thorax, and 
Se ae ne ee a ee cen ae ed he 16 
Erect hairs present on gula and upper surface of head, thorax, and 
DELO 8. orc. Sydech'is dakotensis Emery var. montigena Wheeler. 
Gaster black or very dark brown; pubescence on head and 
thorax very short and indistinct........ dakotensts Emery. 
Gaster paler; pubescence longer and more distinct on head and 
TS RD aes dakotensis var. specularis Emery. 
MTOM RI ADEA GOALIE. oho ce ne = yer tie bee Sel dee foreliana, sp. nov. 
Dig amares amon anced ShImINg jis. EE ee 18 
