106 Mr. Smith's Essay on the Genera and 



Formica fuliginosa, Latr. Hist. Nat. Fourm., p. 140, tab. 5, fig. 

 A— D, ^ , $ , SI ; St. Farg. Hym., i. 200, 2 ; 

 Jurine, Hym., p. 273 ; Losana, Form. Pied., 

 No. 9 ; Nyland. Adno. Mon. Form,, p. 915, 

 12; Foerster, Hym. Stud. Form., p. 38, 17. 



Female. — Length 2| lines. Of a shining deep nigro-piceous 

 colour ; mandibles ferruginous ; clypeus smooth and shining ; 

 ocelli distinct and glassy ; the eyes have a short scattered pube- 

 scence ; antennae, pal'pi and legs testaceous, having a cinereous 

 pilosity ; wings hyaline, the basal half smoky ; the scale small, 

 oblong, rounded and ciliated above; abdomen oblong ovate, 

 as long as the thorax, about the same width as the head, the 

 apical segment pilose, the extreme apex testaceous. 



Worker. — 2 lines. Resembling the female, the legs being darker ; 

 the scape and apex of the joints of the flagellum fuscous ; the 

 mandibles obscure ferruginous ; the ocelli very minute ; the 

 scale minute, abdomen scarcely as wide as the head, sub-ovate, 

 the extreme apex pilose. 



Male. — 2 lines. Coloured as in the female ; mandibles reddish 

 brown, broadly dilated at their apex; the flagellum and tarsi pale 

 testaceous ; the scutellum and metathorax very smooth and shining, 

 wings as in the female: abdomen sub-conical, rounded at the 

 base, pointed at the apex, having some thinly scattered long pube- 

 scence. 



This species is distributed in all parts of the country, its usual 

 habitat being in decaying trees, posts, &c., in which it forms its 

 tortuous galleries ; the perforations are stained black, probably 

 by a peculiar acid discharged by this species. When the F. rufa 

 takes up its abode in an old decayed tree all its galleries are 

 of the original colour of the wood, thus proving some peculiarity 

 in the present species. As I observed before 1 found a colony of 

 this Ant in a sandy bank at Southend. I have found the males 

 and females at the end of July and beginning of August, but I have 

 met with a male in October. 



Sp. 6. Formica umhrala. 



Fo?miwa. —Nitida, cinerascenti-sericea, pilis brevibus adspersis, pal- 

 lido-fuscis ; partibus oris, antennis, pedibusque pallide tes- 

 taceis ; capite thorace paululum latiori ; oculis hirtulis ; alis 

 albescenti-hyalinis a basi fere ad medium fusco-umbratis, nervis 

 brunnescentibus, stigmate fusco ; squama subpentagonali, apice 

 late obtuse-angulatim emarginato. 



