wheeler: ants of the genus formica. 547 



130. F. (P.) KRAUSSi Forel. 



F. kraussii Forel, Mitth. Schweiz. ent. gesell., 1895, 9, ^ ; Emery, Bull. Soc. 

 ent. France, 1899, p. 18; Forel, Ann. Soc. ent. Belg., 1902, 46, p. 155, cf. 

 F. (Proformica) kraussi Emery, Deutsch. ent. zeitschr., 1909, p. 204, ^ cf . 



Worker. Length 3.2 mm. 



Habitus more like that of Lasius than Formica. Head oval, narrower 

 anteriorly; frontal earinae very short. Mandibles 5-toothed, with 

 oblique border. Clypeus very bluntly earinate. Pronotum, seen 

 from above, rounded, spherical, twice as broad as the mesonotum. 

 Petiolar scale truncate, with rounded dorsal border. 



Very shining, head less so, very finely rugulose; mandibles finely 

 striated. 



Surface scarcely pubescent, with numerous short, erect, obtuse, 

 slightly clavate hairs. Legs with short, sparse pubescence. 



Dark brown, gaster piceous with feeble bronze reflections. 



Male. Length 3.5 mm. 



Body short. Eyes not especially large; mandibles narrow and 

 pointed. Thorax high; petiole with bluntly rounded node. Gaster 

 short. Volsellae of genitalia very short and slender. Anterior wings 

 with large stigma and without a closed discoidal cell. 



Body scarcely pubescent; suberect hairs as in the worker; tibiae 

 with a few oblique bristles. 



Piceous, head and tip of gaster almost black; appendages more or 

 less reddish, femora darker. 



Known only from Southern Algeria. 



131. F. (P.) EMMAE Forel. 



F. (P.) emmae Forel, Bull. Soc. Vaud. sci. nat., 1909, ser. 5, 45, p. 381, § ; 

 Emery, Zool. jahrb. Suppl., 1912, 15, p. 103, ^ . 



Worker. Length 3-5.5 mm. 



Mandibles 5-toothed, the apical tooth long; head as broad as long, 

 with the posterior angles rounded and the posterior border scarcely 

 convex. Fourth joint of maxillary palpi curved, as long as the two 

 last joints together; third nearly as long as the fourth. OceUi dis- 

 tinct. Eyes large, rather convex, situated at the posterior third of the 

 head. Clypeus feebly earinate, the carina interrupted at its anterior 

 third by a small transverse impression. Anterior border of clypeus 

 straight, not projecting. Antennal scapes surpassing the posterior 

 border of the head slightly even in the largest workers. First funi- 

 cular joint 1^ times as long as the second, all the other joints at least 



