wheeler: ants of the genus formica. 531 



Hairs and pubescence grayish, both abundant, covering the whole 

 body, the erect hairs on the head, clypeus, gula, mesonotum, scutel- 

 lum, petiolar border and both the upper and lower surfaces of the 

 gaster being very conspicuous and the pubescence being unusually 

 long, though not sufficiently abundant to conceal completely the 

 ground surface. Eyes hairless. 



Black; genitalia and tips of mandibles red; legs yellowish red, 

 with the middle portions of the femora blackened. Wings uniformly 

 and moderately infuscated, with pale brown veins and dark brown 

 stigma. 



Described from four workers and two males taken from a single 

 colony by Prof. C. F. Baker in King's Canyon, Ornisby County, 

 Nevada. The specimens were nesting under a log. 



At first sight one would not hesitate to regard this ant as F. fusca 

 var. subsericea, but closer examination shows it to be quite distinct. 

 The eves of the worker are much smaller than those of siihscricea, 

 the antennae are more slender, with less curved scapes, it has promi- 

 nent hairs on the gula and the surface of the body is bronzy and not so 

 black. The male is very different from the male subsericea in having 

 smaller eyes, broad, toothed mandibles, a much more pronounced 

 sculpture and very different pilosity and pubescence. 



114. F. suBRUFA Roger. 



F. subrufa Roger, Berlin, ent. zeitschr., 1859, 3, p. 236, ^ ; Mayr, Europ. 

 Formicid., 1861, p. 46, y ; Ern. Andre, Rev. mag. zool., 1874, ser. 3, 2, 

 p. 183; Spec. Hymen. Europe, 1882, 2, pt. 14, p. 181, ^ ; Dalla Torre, 

 Catalog. Hymen., 1893, 7, p. 212; Emery, Zool. jahrb. Syst., 1894, 7, pi. 

 22, fig. 20, y ; Deutsch. ent. zeitschr., 1909, p. 199, ^ 9 c? ?, fig. 10. 



Worker. Length 5-6.5 mm. 



Body slender; head, excluding the mandibles, distinctly longer than 

 broad, narrower in front than behind, with nearly straight posterior 

 and lateral borders and rounded posterior corners. Eyes rather large, 

 convex. Clypeus strongly carinate, its anterior border produced, 

 feebly sinuate or trunate in the middle. Frontal carinae diverging 

 behind. -Maxillary palpi long, 6-jointed. Antennae slender, scapes 

 not incrassated towards their tips. Thorax narrow, with moderately 

 rounded pro- and mesonotum and similarly rounded epinotum, sepa- 

 rated by a very long, shallow, saddle-shaped mesoepinotal constric- 

 tion, so that the thorax is somewhat dumb-bell-shaped both in profile 

 and when seen from above. Petiole narrow, cuneate in profile, 

 thick below, compressed above, but with a blunt border which, seen 



