123 



47 (48) 



48 (47 



49 (52 



50 (51 



51 (50; 



52 (49 



53 (54 



54 (53 



55 (56; 



56 (55 



57 (46 



58 (45 



59 (60 



60 (59 



61 (44 



62 (63 



63 (62 



64 (65 



65 (64 



66 (67; 



67 (66; 



68 (5 



69 (70) 



70 (69) 



71 (76) 



72 (73) 



73 (72) 



74 (75) 



75 (74) 



76 (71) 



77 (78) 



78 (77) 



79 (80) 



80 (79) 



An extra cross vein between tlie mediastinal and costal veins,., 



Epiphragma. 



No extra cross vein between the mediastinal and costal veins. 



An extra cross vein in the second basal cell. 



Antennae long and thin Idioptera. 



AntennsB short, very much thickened at the base . Ephelia. 



No extra cross vein in the second basal cell. 



Great cross vein almost opposite base of discal cell Dactylolabis. 



Q-reat cross vein near middle of discal cell. 



Wings with numerous dark dots Poecilostola. 



Wings almost without spots Limnophila. 



Axillary vein very short, abruptly incurved to anal angle ... Trichocera. 



Antennae 6 — -lO-jointed Anisomerince. 



Antennae apparently 6-jointed (<?), or 10-jointed (?) Anisomera. 



Antennae apparently 7-jointed ((?), or 9-iointed (_?) Peronecera. 



Subcostal cross vein before the origin of the praefurca AmalopincB. 



Antenna? 13-jointed Dicranota. 



Antennae 16 — 17-jointed. 



Four posterior cells, wings pubescent TJla. 



Five posterior cells, wings glabrous. 



Small cross vein nearly upright ; last joint of palpi not longer than two 

 preceding j<yint8 taken together Amalopis. 



Small cross vein very oblique ; last joint of palpi longer than the three 

 preceding joints taken together Pedicia. 



Mediastinal vein ending in the subcostal, no cross vein between it and 

 each vein running along side ; last joint of the palpi very long, whip- 

 lash shaped, much longer than the three preceding joints taken 

 together TiPULlDiG. 



Discal cell absent ; tibiae without spurs Dolichopeza. 



Discal cell present ; tibiae spurred. 



Antennae not pectinated. 



Antennae 19-jointed (<?), or 15-jointed (9) Nephrotoma. 



Antennae 13-jointed. 



The three veins from the discal cell usually start separate, or the upper 

 two fi'om a common base ; yellow and black species ...Fachyrrhina. 



The discal cell emits two veins, the upper one forking at some distance 

 from the cell; not yellow and black species Tipula. 



Antennae pectinated (c?). 



Antennae (S) pectinated only on the inner side Dictenidia. 



Antennae (S) pectinated inside and outside. 



Antennae ( <J ) pectinated beneath Xiphura. 



Antennae {$) not pectinated beneath ... Ctenophora. 



LIMNOBIA. 



1 (18) Origin of radial vein far before end of mediastinal vein. 



2 (7) Subcostal vein ends with, or before, the cross vein which unites it to the 



radial vein. 



L 2 



