wheeler: ants of the genus formica. 401 



3. Gaster distinctly infuscated, darker than the head and thorax . . 4 

 Gaster scarcely darker than the head and thorax, its pubescence 



longer and denser. . pallidefulva schaufussi var. dolosa Wheeler, 



4. Hairs on gula and petiole numerous and conspicuous. 



pallidefulva schaufussi MajT. 

 Hairs on gula and petiole few, often lacking on one or the other; 

 head, thorax, and gaster darker. 



palUdcfuha schaufussi var. inccrta Emery. 



5. Gaster yellow like the head and thorax or but very slightly 



infuscated 6 



Gaster dark brown or blacldsh, head and thorax light or dark 

 brown or reddish 7 



6. Body pale yellow pallidefulva Latreille. 



Body reddish yellow, pubescence on gaster shorter, whole body 



smoother pallidefulva var. succinea Wheeler. 



7. Head and thorax brown or reddish, gaster shining. 



pallidefulva nitidiventris Emery. 

 Head and thorax darker, body often less shim'ng. 



pallidefulva nitidiventris var. fuscata Emery. 



Subgenus FORMICA (Linne) Ruzsky. 



Sanguinea Group. 



1. Formica sanguinea sanguinea Latreille. 



Formica sanguinea Latreille, Essai hist, fourmis France, 1798, p. 37, ^ ; 

 Hist. nat. fourmis, 1802, p. 150, pi. 5, fig. 29, S ; Lepeletier, Hist. nat. 

 insect. Hymen., 1836, 1, p. 203, S 9 cf ; Forster, Hymen, stud., 1850, 

 1, p. 20; Mayr, Verb. Zool. bot. ver. Wien, 1855,5, p. 336; Nylander, 

 Ann. sci. nat. Zool., 1856, ser. 4, 5, p. 62; F. Smith, List Brit. anim. 

 Brit, mus., 1858, pt. 6, p. 115; Mayr, Europ. Formicid., 1861, p. 46-48; 

 Forel, Denks. Schweiz. gesell. naturw., 1874, 26, passim; Lubbock, 

 Journ. Linn. soc. Zool., 1877, 13, p. 217, pi. 17, fig. 2; Em. Andre, 

 Spec. Hymen. Europe, 1882, 2, pt. 14, p. 180, p. 185, 188, pi. 9, fig. 18; 

 Dalla Torre, Catalog. Hymen., 1893, 7, p. 211; Bingham, Fauna Brit. 

 Ind., 1903, 2, p. 336; Ruzsky, Formicar. Imper. Ross., 1905, p. 411, 

 figs. 76-79; Emery, Deutsch. ent. zeitschr., 1909, p. 182. 



Formica dominula Nylander, Acta Soc. Fennica, 1846, 2, p. 905, S 9 cf , pi. 18, 

 fig. 15, p. 1047; Ibid., 1849, 3, p. 26. 



