492 bulletin: museum of comparative zoology. 



Worker. 



Differing from pressilabris in its less superficial sculpture and some- 

 what longer pubescence. The upper surface of the gaster is quite 

 opaque at the base. 



Female. 



Somewhat more shining than the female of the typical exsecta; 

 pubescence much longer and denser. 



Male. 



Indistinguishable from the male of pressilabris. 



Distributed through Switzerland and probably also through the 

 mountain regions of Central Europe. The nest mounds are small and 

 more earth is used in their construction than in the nests of the typical 

 exsecta. They are most frequently found in meadows, especially 

 along the borders of hedges and woods. A single colony often inhabits 

 several nests. 



77. F. exsecta pressilabris var. exsecto-pressilabris Forel. 



F. exsecta var. exsecto-pressilabris Forel, Denks. Schweiz. gesell. naturw., 

 1874, 26, p. 52, 55, 57, ^ 9 c^; Dalla Torre, Catalog. Hymen., 1893, 7, 

 p. 205; Emery, Deutsch. ent. zeitschr., 1909, p. 192. 



Worker and Female. 



The worker resembles the var. foreli more closely, especially in 

 stature and in the length of the maxillary palpi. The female resembles 

 the typical exsecta, especially in stature. 



Switzerland; Vosges Mts. 



The nests of this variety are described by Forel as being intermediate 

 between those of foreli and the typical exsecta. 



78. F. EXSECTA pressilabris var. rufomaculata Ruzsky. 



F. exsecta pressilabris var. rufomaculata Ruzsky, Arb. Ges. naturf. Kasan, 

 1895, 28, p. 13, ^ ; Berlin, ent. zeitschr., 1896, 41, p. 68; Formicar. 

 Imper. Ross., 1906, p. 369; Emery, Deutsch. ent. zeitschr., 1909, p. 192. 



Worker. Characterized by having the base of the first gastric 

 segment with a red spot at the base. Legs yellowish brown. 



Southeastern Russia. 



79. F. SUECICA Adlerz. 



F. suecica Adlerz, Ofvers. Vet. Acad, forhandl., 1902, p. 263, ^ 9 (f . 



F. exsecta subsp. suecica Emery, Deutsch. ent. zeitschr., 1909, p. 193, y 9 6^. 



