TABLES OF AEDES AND H.EMAGOGUS 619 



12. Basal lobe of side-piece conical, strongly protuberant 



riparius Dyar & Knab (p. 714) 

 Basal lobe of side-piece moderate or small 13 



13. Filament of harpago short, bud-shaped with transverse ridges 



trichurus Dyar (p. 761) 

 Filament of harpago with angular lateral expansion 



CahfitcMi Felt (p. 690) 

 \sansoni Dyar & Knab (p. 687) 



Filament of harpago long, lanceolate, fcampestris Dyar & Knab (p. 629) 



^ ^ "' \euedes Howard, Dyar & Knab (p. 715) 

 Filament of harpago slender filiform canadensis Theobald (p. 650) 



14. Stem of harpago broadly angled beyond middle, hirsute and with a seta; 



side-piece without hair-tuft impiger Walker (p. 756) 



Stem of harpago similar; side-piece with a large hair-tuft at origin of apical 



lobe diantwus Howard, Dyar & Knab (p. 758) 



Stem of harpago angled before middle, hirsute only, pullatus Coquillett (p. 739) 



15. Filament of harpago with sharp retrose central spine 



f twniorhynchus Wiedemann (p. 669) 

 \niger Giles (p. 674) 

 Filament of harpago without central spine 16 



16. Filament of harpago rather broad 17 



( sollicitans Walker (p. 660) 



mitchellce Dyar (p. 666) 

 nigromaculis Ludlow (p. 657) 

 thorntoni Dyar & Knab (p. 820) 

 podographicus Dyar & Knab (p. 814) 

 oswaldi Lutz (p. 818) 



17. A long stout spine at base of side-piece mediovittata Coquillett (p. 823) 



atropalpus Coquillett (p. 640) 



Filament of harpago narrow, filiform. 



Without such a spine. 



varipalpus Coquillett (p. 646) 

 triseriatus Say (p. 764) 

 epactius Dyar & Knab (p. 643) 

 fluviatilis Lutz (p. 721) 



18. Basal lobe of side-piece small, narrow f aureostriata Gva,hham(p 858) 



^ ' \fulvithorax Lutz (p. 846) 



falbonotata Coquillett (p. 855) 



Basal lobe of side-piece broadly conical \ walkeri Theobald (p. 851) 



Ibusckii Coquillett (p. 861) 



19. Clasp-filament furcate at the tip and with a projection at base 



fuscus Osten Sacken (p. 731) 

 Clasp-filament furcate, the claw inserted subapically, no projection at base 



sylvestris Theobald (p. 696) 

 Clasp-filament simple, normal calopus Meigen (p. 836) 



The following are omitted as we possess no male specimens : 



fulvus Wied. provocans Walk. knabi Coq. 



vittata Theob. angustivittatus D. & K. hortator D. & K. 



euochrus How., D. & K. obturbator D. & K. septemstriatus D. &, K. 



testaceus van der Wulp. condolescens D. & K. sexlineata Theob. 



nubilus Theob. tormentor D. & K. guadrivittatus Coq. 



aldrichi D. & K. bracteatus Coq. aurites Theob. 



decticus How., D. & K. balteatus D. & K. excrucians Walk. 



centrotus How., D. & K. leucomelas Lutz. punctor Kirby. 



LaRV.E (AiJDES AND H^MAGOGUs). 



1. Air-tube with the hair-tuft within the pecten 2 



Air-tube with the tuft beyond the pecten 8 



2. Anal segment ringed by the plate 3 



Anal segment with the ring broken on the ventral line 6 



3. Lateral comb of the eighth segment of few scales in a nearly single row. ... 4 

 Lateral comb of the eighth segment of many scales in a triangular patch .... 5 



4. Pecten of the air-tube reaching to three-fourths, well beyond the tuft 



tormentor Dyar & Knab (p. 798) 

 Pecten of the air-tube reaching over half, the tuft just before the last tooth 



pertinax Grabham (p. 793) 



5. Pecten of the air-tube with detached teeth outwardly 



bimaculatus Coquillett (p. 623) 

 Pecten of the air-tube with teeth evenly spaced tortilis Theobald (p. 808) 



