14° DURHAM DIPTBEA. 



XXIV. 223. 



67 (64). V.4. only indistinctly bayonet-shaped, the angles 



obtuse, and then gradually nearing V.3., not 

 parallel with it. 



68 (75). Mid metatarsi with one bristle above, hind femora 



with long yellow hairs beneath. 



69 (72). Costa with a wart-like thickening at the end of V.I . 



70 (71). Antennae yellow with only the tip brown. 



(1228. festivus, Hal.) 



71 (70). Antennas nearly all black, only yellow at the base 



beneath. 



1229. Dolichopus trivtalis, Hal. 

 A common species. Hesleden, Bishop Auckland, 

 Waskerley, Bedburn, Wearhead, and Embleton 

 (Northumberland). 



72 (69). No thickening at the end of V.I. 



73 (74). Fore tarsi with short erect bristles on the middle, 



hind tarsi pale at the base. 



(1226. virgultorum, Hal.) 



74 (73). Fore tarsi bare, hind tarsi all black. 



(1227. arbustonim, Stan.) 



75 (68). Mid metatarsi without any bristle above. 



76 (79). Wings at the tip with a spot-like darkening. 



77 (78). Hind femora with long bristles on the under side, 



hind metatarsi with one bristle above. 



(1222. signifer, Hal.) 



78 (77). Hind femora bare below, hind metatarsi with at 



least two bristles above. (1223. sabinus, Hal.) 



79 (76). Wings evenly tinged or clear. 



80 (81). Hind metatarsi with only one bristle above. Hind 



tibiae dilated. (1201. clavipes, Hal.) 



81 (80). Hind metatarsi with at least two bristles above. 



82 (89). Wings with the costa thickened at the end of V.I. 



into a wart-like swelling. 



83 (86). Third antennal joint much elongated, sharp pointed, 



turned up at the end and distinctly haired 

 (HI. 34a). 



