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 hyaline, with pale brown veins and stigma. 
Mate. 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 débris than those of rufa and pratensis. Single colonies often 
occupy more than 100 nests which are connected with one another by 
runways and may cover a considerable area. 
73. FE. EXSECTA EXSECTA var. RUBENS Forel. 
F. exsecta var. rubens Forel, Denks. Schweiz. gesell. naturw., 1874, 26, p.51, 8 ; 
Ern. André, Spec. Hymén. 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, 8. 
WorkeEr. 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, 8. 
WorkKER. Length 5-6.5 mm. 
Maxillary palpi a little shorter than in the typical ersecta. Dark 
red, the brown color on the head more extensive. Legs, or at least 
