Wingless 



Winged : 

 Anal vein 



very short, incurved to the anal angle 



simple, detached 



rigid and very short 



longer than the rest of the head 

 C 12- jointed 



W 



13-joiuted 



' remote-monili- 1 

 form, bipectinate 

 in the male 



Chionea.* 

 1. Triciiocera. 

 3. Akisomera. 

 9. Geranomyia. 

 8. Ehamphidia. 

 13. dolichopeza. 



6. DiCRANOTA. 



./ 



14-jointed . ( 



compact-monili- 

 form, unbranched 

 in either sex . 



!<■§- 



^^ ( shortest . 



< 2 



1"^ 



equal 



^four: Pobra- 

 chial areolet 



entire 



bisected 



forked: Discalareolet ( 



17-jointed : ( much the longest 



Last joint of ( 



palpi ... 1, nearly equal . . 



^ three (with an ( none 

 additional 

 branch subse- 

 quent : Discal 

 areolet . 



10. Ehipidia. 



5". LiMNOBIA. 



(Glochina, 31//.) 

 4. Symplecta. 



3. Erioptera. 



5^. LiMNOBIA, 



{proprie dictum.) 



5<^. LiMNOBIA. 



(Limnophila, Mcq.) 



5"*. LiMNOBIA. 



(Idioptera, 3Icq.) 



5^. LiMNOBIA. 



(Tricyphona, Ztt.) 

 12. Pedicia. 

 7. Ula. 

 11. Cylindrotoma. 



5'. LiMNOBIA. 



(Amalopis, Hal.) 



of more than 13 joints 14. Nephrotoma. 



one: An- 

 tcnnw . 



13-jointed( 



unbranched 

 ineithersex 



pectinated 

 in the male 



, obsolete ; a fold in place of it 



* Not British, as far as known. 



1.5. TiPur,A. 



16. C'tenophora. 



17. Pl'YCHOPTERA. 



