188 BRITISH ANTS. 



Table of the Species. 



M 



Colour shining black 1 fuliginosa Latr. 



Colour otherwise 2 



2 f Colour yellow 3 



(1) \ Colour brown or blackish brown 5 



3 J Size variable, generally smaller ; scale low, broadest at apex 4 flava F. 



(2) ^ Size less variable, larger ; scale higher, not broadest at apex 4 



(4) ( Funiculus thinner, with joints longer than broad ; tibiae with outstaiid- 



J ing hairs 5 umbrata Nyl. 



3 j Funiculus thicker, with joints not longer than broad ; tibiae without 



I outstanding hairs 6 mixta Nyl. 



5 f Scape of antennae and tibiae with outstanding hairs ... 2 nigra L. 

 (2) \ Scape of antennae and tibiae without outstanding hairs 3 aliena Forst. 



? 



Head large, as broad as thorax, emarginate posteriorly 2 



Head small, not as broad as thorax, not emarginate posteriorly 4 



2 / Colour shining black fuliginosa Latr. 



(1) \ Colour brown 3 



3 f Funiculus thinner, with joints longer than broad; tibiae with out- 

 J standing hairs umbrata Nyl. 



(2) | Funiculus thicker, with joints not longer than broad ; tibiae without 



outstanding hairs mixta Nyl. 



4 ( Underside of head, thorax, and gaster yellowish flava F. 



(1) \ Underside the same colour as above ------ -------- 5 



5 / Scape and tibiae with outstanding hairs ......... nigra L. 



(4) \ Scape and tibiae without outstanding hairs ------ aliena Forst. 



Mandibles armed with five teeth ................ 2 



Mandibles armed with a single tooth -------------- 3 



Eyes with distinct outstanding hairs ........ umbrata Nyl. 



Eyes almost without hairs -------------- mixta Nyl. 



Colour shining black ; gaster with large scattered punctures .... 



....................... fuliginosa Latr. 



Colour otherwise ; gaster without large scattered punctures ---- 4 



Frontal furrow indistinct ; wings slightly smoky ...... flava F. 



Frontal furrow distinct ; wings clear -------------- 5 



o j Scape and tibiae with outstanding hairs ; mandibles black brown nigra~L. 

 (4) -j Scape and tibiae without outstanding hairs ; mandibles partly yellowish 

 [ ------------------------- aliena Forst. 



Donisthorpea fuliginosa Latr. 



["The Jet Ant" Gould Account English Ants 2 1 9 2 86-90 3 (1747)]. 

 Formica fuliginosa Latreille Ess. Hist. Fourmis France 36 (1798) 4 . ("La 

 fourmi fuligineuse " Huber Moeurs Fourmis 52 318 Pf. l'3-4 (1810)) 5 . 

 Formica fuliginosa Schenck Jahrb. Ver. Naturk. Nassau 8 45-48 6 139 7 

 (1852) ; Mayr Verh. Zool. Bot. Ver. Wien 284 8 351 9 (1855) ; F. Smith Trans. 

 Ent. Soc. Lond. (n.s.) 3 97 10 105-106 11 (1855) ; Haliday NH. Review 4 

 33 (1857) 12 ; F. Smith Cat. Brit. Foss. Hym. 10 (1858) 13 ; Meinert Kong. 

 Danske. Vidensk. Selsk. Skrift. 5 320-321 (1861) 14 . Lasius fuliginosus Mayr 

 Europ. Formicid. 49-51 (1861) 15 . Formica fuliginosa F. Smith Ent. Ann. 

 1866 130 16 : 1868 95 17 ; Holt Science Gossip 1868 159 18 . Lasius fuliginosus 

 Forel Denkschr. Schweiz. Ges. Naturw. 26 46 19 181-187 20 217 21 375 22 407 23 

 (1874) ; Lubbock Mo. Mic. Journ. 1877 134 Pf. 190'3 24 ; Saunders Trans. 



