102 BRITISH ANTS. 



Antennae breves graciles prope os in foveolis duabus insertae ; 10-articulatae, 



articulis duobus apicalibus majoribus. 



Labrum parvum inter mandibulas et supra os deflexum bilobum. 

 Mandibulae magnae valde curvatae crassae apice obliquo, edentulae. 

 Maxillae et mentum minima fere membranacea, labium subductum. 

 Palpi maxillares et labiales biarticulati ; gracillimi brevissimi, apice seta 



instruct!. 



Thorax valde angustus, prothorace mediocri ; mesothorace majori. 

 Abdomen magnum fere circulare subdepressum segmentis basalibus duobus 



nodos duos formantibus, segmento proximo maximo. 

 Pedes graciles tibiis 4 posticis ecalcaratis, unguibus tarsorum simplicibus." 



Solenopsis fugax Latr. 



Formica fugax Latreille Ess. Hist. Fourmis France 46 (1798) 1 . Myrmica 

 ftavidula Nylander Acta. Soc. Sc. Fenn. 3 43 (1849) 2 . Myrmica fugax Schenck 

 Jahr. ver. Naturk. Nassau 8 107-110 (1852) 3 . Myrmica ftavidula F. Smith 

 Proc. Ent. Soc. Lond. (n.s.) 3 24 (1854) 4 . Diplorhoptrum fugax Mayr Verh. 

 zool. bot. Ver. Wien 5 450-452 (1855) 5 . Myrmica fugax F. Smith Trans. 

 Ent. Soc. Lond. (n.s.) 3 127 (1855) 6 . Myrmica (Diphlorhoptrum) fugax F. 

 Smith Trans. Ent. Soc. Lond. (n.s.) 4 283 (1858) 7 : Cat. Brit. Foss. Hym. 

 33 (1858) 8 . Diplorhoptrum fugax F. Smith Ent. Mo. Mag. 2 29 (1865) 9 . 

 Solenopsis fugax Forel Mitt. Schweiz. Ent. Ges. 3 105-128 (1869) 10 : Denkschr. 

 Schweiz. Ges. Naturw. 26 385 11 411-412 12 (1874); Saunders Trans. Ent. 

 Soc. Lond. 1880 22 1 13 ; Er. Andre Hym. Europe 2 388-389 (1881) 14 ; Lub- 

 bock Ants, Bees, Wasps 78 (1882) 15 ; Fowler Ent. Mo. Mag. 19 139 (1882) 16 : 

 21 37-38 (1884) 17 ; Wasmann zusam. Nest, gemischt. Kolon. Ameisen 18-26 

 (1891) 18 ; Dalla Torre Cat. Hym. 7 75 (1893) 19 ; Richardson Ent. Mo. Mag. 

 30 213 (1894) 20 ; Wasmann Krit. Ver. Myr. Ter. Art. 162 (1894) 21 ; Farren- 

 White Ants' Ways 246 (1895) 22 ; Saunders Hym. Acul. 41 (1896) 23 ; Janet 

 Animaux Myr. 58-60 (1897) 24 ; D. Sharp Camb. NH. Insects 2 137 (1899) 25 ; 

 Donisthorpe Ent. Rec. 14 15 (1902) 26 : 20 282 (1908) 27 : Trans. Leicester 

 Lit-Phil. Soc. 12 228 (1908) 28 : Ent. Rec. 21 258 (1909) 29 ; Emery Deutsch. 

 Ent. Zeitschr. 1909 30 30 ; Donisthorpe Trans. Ent. Soc. Lond. 1910 146 31 ; 

 Wheeler Ants 427 (1910) 32 ; Santschi Bull. Soc. Sc. Bucarest 19 649 (1910) 33 ; 

 Donisthorpe Ent. Rec. 26 38 (1914) 34 . 



Fig. 61. Antenna of Solenopsis fugax . 



^ Reddish yellow (the larger examples being darker, almost brown), the 

 first segment of the gaster being usually darker, very finely punctured, smooth, 

 and shining, hairy. Long. 1-5-3 mm. 



Fig. 62. Antenna of Solenopsis fugax <J. 



$ Black brown with the mandibles, antennae, legs, the posterior borders 

 of each segment and the underside of the gaster yellow, the whole body being 

 shining and very hairy. Head and thorax more coarsely punctured than in 

 the ty. Wings very slightly fuscous with the veins and pterostigma yellowish 

 brown. Long. 6-6-5 mm. 



