512 bulletin: museum of comparative zoology. 



92. F. FUSCA picea Nylander. 



F. picea Nylander, Acta Soc. Fennica, 1846, 2, p. 917, 1059, ^ 9 ; Forster, 



Hymen, stud., 1850, 1, p. 30, y . 

 F. gagates Meinert, Naturv. abh. Dansk. vid. selsk., 1860, ser. 5, 5, p. 316, S 



{nee 9 cf); Ruzsky, Formicar. Imper. Ross., 1905, p. 378; Dalla Torre, 



Catalog. Hymen., 1893, 7, p. 198. 

 F. glabra White, Ants and their ways, 1883, p. 253. 



F. transkaukasica Nassonov, Arb. Lab. zool. Univ. Moskau, 1889, 4, p. 21. 

 F. fusca transkaukasica Ruzsky, Formicar. Imper. Ross., 1905, p. 384, Q . 

 F.fusca gagates y&v . filchneri Forel, Ann. Soc. ent. Belg., 1907, 51, p. 208, ^ . 

 F. fusca picea Emery, Deutsch. ent. zeitschr., 1909, p. 195, fig. 8, y . 



Worker. Length 3-6.5 mm. 



About the size of the typical fusca. Epinotum angular in profile. 

 Petiole rather broad, compressed anteroposteriorly, with sharp, entire 

 border. Surface of body, including the frontal area, smooth and shin- 

 ing. Mandibles more opaque, finely striated and coarsely punctate. 

 Hairs and pubescence very sparse. Color jet black; mandibles, an- 

 tennae and legs dai'k red or dark brown; femora, tibiae, and ends of 

 funiculi often darker. 



Female and Male, judging from the descriptions, very similar to 

 the corresponding phases of the typical fusca, but with the body of 

 the female smooth and shining as in the worker. 



Northern Europe and Asia to Eastern Siberia. According to 

 Emery, this form represents the true gagates in Sweden, Finland, 

 Russia, Eastern Siberia, and China, and has frequently been con- 

 founded with that species. He calls attention to the fact that ori- 

 ental specimens sometimes have a few erect hairs on the underside 

 of the head. I find these hairs in one of two workers of 2>icca from 

 Lahoul, Thibet, given me by Professor Forel. 



93. F. FUSCA picea var. gagatoides Ruzsky. 



F. fusca var. gagatoides Ruzsky, Nachr. Russ. geogr. gesell., 1904, p. 289, ^ 9 ; 



Formicar. Imper. Ross., 1905, p. 377. 

 F. fusca picea var. gagatoides Emery, Deutsch. ent. zeitschr., 1909, p. 195, 



y 9. 



Worker and Female. 



Intermediate in its characters between picea and fusca. 



Northern Europe. 



