490 bulletin: museum of comparative zoology. 



Ferruginous red; top of head, posterior border of pronotum, the 

 mesonotum, scutellum, metanotum, and gaster dark reddish brown. 

 Wings brownish hyahne, with pale brown veins and stigma. 



Male. Length 6-9 mm. 



Head rather small, with broadly excised posterior margin. Eyes 

 large. Mandibles pointed, edentate, and rather narrow. Maxillary 

 palpi as in the worker and female. Petiole low, somewhat compressed, 

 with blunt, broadly excised border. 



Body rather shining, especially the gaster. 



Hairs shorter than in the female, most abundant and distinct on 

 the head and thoracic dorsum. Eyes hairy. Pubescence short, 

 most distinct on the upper surface of the gaster. 



Black; legs and genitalia brown, femora somewhat darker. Wings 

 colored as in the female. 



Host (Temporary). F.fusca. 



North and Middle Europe; Alps, Caucasus, Siberia, Altai Moun- 

 tains. 



Lives in woods and builds flattened mound nests covered with finer 

 plant debris than those of rufa and praiensis. Single colonies often 

 occupy more than 100 nests which are connected with one another by 

 runways and may cover a considerable area. 



73. F. EXSECTA EXSECTA var. RUBENS Forel. 



F. exsecta var. rubens Forel, Denks. Schweiz. gesell. naturw., 1874, 26, p. 51, ^ ; 

 Ern. Andr^, Spec. Hymen. Europe, 1882, 2, pt. 14, p. 179; Dalla Torre, 

 Catalog. Hymen., 1893, 7, p. 195; Ruzsky, Formicar. Imper. Ross., 1905, 

 p. 358; Emery, Deutsch. ent. zeitschr., 1909, p. 191, ^ . 



Worker. Differs from the typical exsecta only in color, the body 

 being pale red, with a small spot on the vertex and the gaster, except 

 its base, brown. 



This form is known only from the Swiss Jura and Southern Russia. 

 I am inclined to include under it also a number of workers which 

 I took at Zermatt, Switzerland. In these the spot on the head is not 

 smaller than in the typical form but much paler. 



74. F. EXSECTA exsecta var. etrusca Emery. 



F. exsecta var. etrusca Emery, Deutsch. ent. zeitschr., 1909, p. 191, ^ . 



Worker. Length 5-6.5 mm. 



Maxillary palpi a little shorter than in the typical exsecta. Dark 

 red, the brown color on the head more extensive. Legs, or at least 



