224 BRITISH ANTS. 



(1896) 28 . Lasius umbralus Harrison Entom. 29 375 (1896) 29 ; Saunderg 

 Hym-Acul. 24 (1896) 30 . Lasius ftavus Donisthorpe Ent. Rec. 9 246 (1897) 31 . 

 Lasius umbratus Morley Hym. Suffolk 1 1 (1899) 32 ; Evans Ent. Mo. Mag. 

 36 265 (1900) 33 ; Crawley Science Gossip (n.s.) 6 365 (1900) 34 ; Vic. Hist. 

 Worcester 1 89 (1901) 35 ; Barnes Ent. Mo. Mag. 38 265 (1902) 36 ; Jordain 

 Trans. N. Staffs. NF. Club 37 82 (1903) 37 ; Tuck Trans. Norf. Norwich 

 Nat. Soc. 7 526 (1903) 38 ; Vic. Hist. Warwick 1 73 (1904) 39 ; Vic. Hist. 

 Sussex 1 131 (1905) 40 ; Vic. Hist. Cornwall 1 182 (1906) 41 ; Wasmann Archiv. 

 tri. Instit. Grand-Ducal Luxemburg 1906 12 42 ; Vic. Hist. Yorks 1 216 

 '(1907) 43 ; Vic. Hist. Kent 1 116 (1908) 44 ; Donisthorpe Trans. Leicester 

 Lit-Phil. Soc. 12 224 (1908) 45 ; Morley Guide NH. I. of W. 303 (1909) 46 ; 

 Crawley Ent. Mo. Mag. 45 95 (1909) 47 ; Wasmann Zool. Anzeig. 35 133 48 

 137 49 (1909) 50 . Lasius ftavus (? L. umbratus} Crawley Ent. Record 22 67 

 (1910) 51 . Lasius umbratus Wheeler Psyche 17 235-243 (1910) 52 ; Donis- 

 thorpe Ent. Rec. 23 II 53 59 54 237 55 (1911) : Entom. 44 390 (1911) 56 ; Trans. 

 Ent. Soc. Lond. 1911 ISO 57 ; Evans Scot. Nat. 1912 106 58 ; Hallett Trans. 

 Cardiff Nat. Soc. 44 2 (1912) 59 ; Donisthorpe Ent. Rec. 25 92 (1913) 60 : Rep. 

 Lancs-Chesh. Ent. Soc. 36 1912 40 (1913) 61 ; Crawley and Donisthorpe 

 Int. Ent. Cong. Oxford 1912 2 47-51 (1913) 62 ; Crawley Ent. Rec. 25 135 

 (1913) 63 ; Brun Biol. Centralb. 33 27 (1913) 64 ; Adlerz Myrornas 63 (1913) 65 ; 

 Donisthorpe Ent. Rec. 26 39-40 (1914) 66 ; Pinkney Ent. Rec. 26 98 (1914) 67 ; 

 Crawley Ent. Rec. 26 142 (1914) 68 ; J. B. Elliott Trans. Brit. Mycol. Soc. 

 1914 139-142 69 . 



^ Usually clear yellow, sometimes reddish, but the whole body of the same 

 colour, size not very variable. 



Head very slightly emarginate posteriorly ; eyes small, as in ftavus ; ocelli 

 very small and indistinct ; frontal furrow indistinct ; funiculus of antennae 

 with joints longer than broad. Thorax hairy, pubescent. Scale high, nar- 

 rowest at apex, slightly emarginate ; gaster pubescent and hairy. Tibiae 

 with outstanding hairs. Long. 3' 8-5-5 mm. 



Fig. 85. Donisthorpea umbrata ?. 



$ Reddish brown, with the mandibles, antennae, and legs lighter. 



Head large, as broad as thorax, emarginate posteriorly ; funiculus of 

 antennae with joints longer than broad. Thorax pubescent and hairy, only 

 slightly narrower than gaster. Scale emarginate at apex ; gaster pubescent 

 and hairy. Tibiae with outstanding hairs. Wings infuscate at the base 

 for half their length, the colour considerably darker than in ftavus. Long. 

 7-8 mm. 



$ Blackish brown, antennae and legs lighter, funiculus and tarsi yellowish. 

 Head large ; mandibles armed with five teeth ; frontal furrow distinct ; eyes 

 with distinct outstanding hairs. Wings as in $. Long. 4-4-8 mm. 



