wheeler: ants of the genus formica. 545 



125. F. (P.) KORBi Emery. 



F. (P.) korbi Emery, Deutsch. ent. zeitschr., 1909, p. 202, ^ 9 ; Forel, 

 Bull. Soc. Vaud. sci. nat., 1911, ser. 5, 47, p. 353. 



Worker. Length 2.5-6.5 mm. 



Structure and color of the body almost exactly the same as in 

 nasuta. 



Whole body, even in small specimens, opaque, owing to its fine 

 sculpture, with a slight bronzy or steel-blue luster, most distinct on 

 the gaster. 



Pubescence dense, whitish and appressed. Hairs suberect, long, 

 sparse, and obtuse. 



Female. Also very similar to F. nasuta. Pubescence as in the 

 worker; color black, appendages paler. 



Sultan-Dagh in Anatolia (M. Korb). 



Forel believes that this form may eventually prove to be only a 

 subspecies of nasuta. 



126. F. (P.) MONGOLiCA Emery. 



F. nasuta subsp. mongolica Emery, Zichy III Asiat. forschungsreise, 1901, 



p. 159, y . 

 F. (Proformica) mongolica 'EmeTy, Deutsch. ent. zeitschr., 1909, p. 202. 



Worker. Length 2-4.2 mm. 



Resembling the small worker of nasuta in color and sculpture, 

 but the head is proportionally broader, the antennae shorter and 

 thicker, the thorax much stouter, and the pronotum narrower in pro- 

 portion to the posterior portion of the thorax. Pubescence sparse as 

 in nasuta. 



Chara-Gol in Mongolia. 



Emery saw only a few specimens of this species and it is therefore 

 doubtful whether larger ones occur. 



127. F. (P.) aberrans Mayr. 



F. aberrans Mayr, Fedtschenko's Turkestan. Formicid. 1877, p. 7, ^ ', 

 Tijdschr. ent., 1880, 22, p. 27; Em Andre, Spec. Hymfe. Europe, 1882, 

 2, pt. 14, p. 178, ^ ; Dalla Torre, Catalog. Hymen., 1893, 7, p. 192. 



F. (Proformica) aberrans Ruzsky, Formicar. Imper. Ross., 1905, p. 421; Emery, 

 Deutsch. ent. zeitschr., 1909, p. 203. 



