326 BRITISH ANTS. 



Soc. Lond. 1880 207 12 ; Stolpe Ent. Tidskr. 3 133 (1882) 13 . Formica glabra 

 Farren- White Ants' Ways 80 14 253 15 (1883). Formica gagates Saunders Ent. 

 Mo. Mag. 20 16 (1885) a6 . Formica fusca race gagates Adlerz Bih. Sv. Vet-Akad. 

 Handl. 11 308 (1886) 17 . Formica transkaukasica Nassonow Imp. Obshch. 

 Lyrrb. Est-Ant-Etn. Mosc. 58 (1) 62 [ = Tr. Lab. Zool-Mus. 2 (1) 62] (1889) 18 . 

 Formica gagates Dalla Torre Cat. Hym. 7 198-199 (1893) 19 [in part]. Formica 

 glabra Farren- White Ants' Ways (Ed. 2) 5 20 83-84 21 234 22 (1895). Formica 

 fusca race gagates Saunders Hym-Acul. 22 (1896) 23 . Formica gagates Ruzsky 

 Form. Imp. Ross. 378 (1905) 24 . Formica fusca transkaukasica Ruzsky Form. 

 Imp. Ross. 384 (1905) 25 . Formica fusca race gagates Arnold Ent. Mo. Mag. 

 41 211-212 (1905) 26 . Formica fusca subsp. gagates v. filchneri Forel Ann. 

 Soc. Ent. Belg. 51 208 (1907) 27 . Formica fusca picea Emery Deutsch. Ent. 

 Zeitschr. 1909 195 28 ; Bondroit Ann. Soc. Ent. Belg. 53 483 (1909) 29 . For- 

 mica fusca subsp. gagates Donisthorpe Entom. 44 390 (191 1) 30 . Formica 

 picea Reichensperger Bonn. Sitz. Ber. Nat. Ver. (E) 1911 122 31 ; Bondroit 

 Ann. Soc. Ent. Belg. 56 352 (1912) 32 ; Donisthorpe Ent. Rec. 24 306 (1912) 33 : 

 25 67-68 Tf. 1-2 (1913) 34 . Formica fusca picea Wheeler Bull. Mus. Compar. 

 Zool. 53 512 (1913) 35 ; Bonner Biol. Centralb. 34 59-76 Tf. 1-6 (1914) 36 ; 

 Wasmann Biol. Centralb. 34 76-80 (1914) 37 ; Adlerz Arkiv. Zool. 8 1-5 

 (1914) 38 . 



Dalla Torre 19 incorrectly cites F. picea Nylander and F. glabra 

 Farren -White as synonyms of F. gagates Latr. 



Q Shining, lighter or darker blackish brown, mandibles, the greater part of 

 the antennae, and legs pale reddish brown. In the lighter specimens only the 

 head posteriorly and the apex of the antennae are dark, in the darker specimens 

 the whole body and the apex of the antennae are blackish, and the femora are 

 infuscate. 



Head much smoother than in fusca, finely alutaceous ; cheeks and frontal 

 area more shining, being more finely shagreened. Thorax smooth, very finely 

 shagreened, pubescence very scanty, scarcely visible except at sides of 

 epinotum ; pronotum and mesonotum furnished with outstanding yellow 

 hairs especially on the former, in which they are longer ; epinotum seen 

 in profile, distinctly angled. Scale rounded ; gaster smooth and shining, 

 finely alutaceous, pubescence very sparse and scattered, with outstanding 

 yellow hairs or bristles. Long. 4-4-5-5 mm. (4-6-5 mm. teste Bonner.) 



$ Shining black, much smoother than in fusca, mandibles, legs, and scape 

 brownish red. 



Head (apart from the mandibles) about as broad as long, but a little 

 shorter and broader than in fusca, the sculpture consisting of very close 

 scratches (alutaceous puncturation) with some distinct small scattered punc- 

 tures ; clypeus entire, more sharply and distinctly carinate than in fusca ; 

 frontal area finely punctured but more shining than in fusca ; eyes apparently 

 a little smaller than in fusca, with facets somewhat smaller and closer. Thorax 

 not so distinctly broader than head as in fusca, with more abundant, more 

 distinct and longer hairs, pubescence almost nil, even on the epinotum ; 

 mesonotum simply alutaceous, with a few large and small scattered punctures ; 

 scutellum, almost entirely smooth, very shining. Scale rounded much as in 

 fusca ; gaster very finely alutaceous transversely ; almost impunctuate, 

 and without pubescence, furnished with long outstanding yellow hairs, 

 besides the bristles on the margins of the segments. Legs with less fine and 

 close pubescence than in fusca. Long. 8-9 mm. 



$ Black, more shining than in fusca, antennae all black, mandibles black, 

 scarcely lighter at the apex, legs yellow with tibiae at base and last joint of tarsi 

 darker, femora blackish, genitalia partly yellow, partly blackish. 



Head narrow anteriorly ; broad posteriorly, sculpture smoother and finer 

 than in fusca ; frontal area smoother and more shining ; eyes not quite so 

 convex ; space at base of frontal furrow smoother and more shining. Thorax 



