108 Mr. Smith's Essay on the Genera and 



rium ; Mr. Dale has taken all the sexes, and from his specimens 

 I have described the female nnd worker ; the male is from Lewes, 

 near Brighton. 



Sp. 7. Formica Jlava. 

 Fccm'ma. — Pallide fusca, dense flavido-sericea, antennis pedibusque 



pallide testaceo-cinerascentibus ; alis hyaliiiis, versus basin 



parum infuscatis, nervis et stigmate flavido-cinereis ; squama 



subovali, supra late obtuse angulatim emarginata. 

 Operaria. — Flavo-testacea, lata, nitida, sericeo micans sparseque 



flavido-pilosula ; ocidis minutis atris ovalibus, ocellis minutissi- 



mis ; squama parva subovali, supra rotundata vel truncata. 

 Mas. — Fuscus, nitidissimus ; palpis, antenarum fl.igellis, pedum 



articulis et tarsis flavido-testaceis ; flagellorum articulo primo 



crassiusculo ; fronte media levissime transversim subimpressa ; 



alis subhyalinis, nervis pallide testaceis, quandoque pallide 



fuscescentibus ; squama subquadrata. 



Formica Jlava, De Geer, Ins., ii.l089, 5, tab. 42, fig. 24 ; Fabr. 

 Ent. Syst., ii. 357, 34; Latr. Hist. Nat. 

 Fourm,, p. 166, tab. 7, fig. 36, ^ 2 g ; St. 

 Farg. Hym., i. 408, 9 ; Losana, Form. Pied., 

 17; Nyland. Adno. Mon. Form., 922, 17; 

 Foerster, Hym. Stud. Form. 



Formica rubra, Zett. Ins. Lapp., p. 450, 8. 



Female, — Length 3 lines. Pale fuscous, the face below the 

 insertion of the antennae, the palpi, antennse, scale and legs, of a 

 pale testaceous-yellow ; the mandibles usually rather inclined to 

 ferruginous ; the teeth which arm their apex and the superior 

 margin of the abdominal scale fuscous ; the body densely clothed 

 with a fine yellow cinereous pile ; the head not so wide as the 

 thorax, the clypeus very convex, smooth and shining ; wings 

 hyaline, sometimes faintly smoky towards their base. Abdomen 

 oblong-ovate, having a fine silky pile ; as long as the head and 

 thorax, the margins of the segments narrowly pale testaceous. 



Worker. — Entirely pale yellow, the mandibles pale ferruginous, 

 the eyes small and black ; in small individuals the ocelli are ob- 

 solete, or not distinguishable without a high microscopic power, 

 in larger individuals distinctly visible: head behind slightly con- 

 cave ; the scale subovate, its superior margin nearly straight ; 

 abdomen beneath having usually a dark fuscous spot, obsolete in 

 some individuals, after death particularly, but usually present in 

 living ones. 



Male. — Dark fuscous, shining, having a sparing cinereous pile, 

 most dense on the head and abdomen ; the clypeus smooth and 



