Filament of harpago narrow, filiform . . 



TABLES OF AEDES AND H^MAGOGUS 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 



tricJiurus Dyar (p. 761) 

 Filament of harpago with angular lateral expansion 



faifitchii Felt (p. 690) 

 \sansoni Dyar & Knab (p. 687) 



Filament of harpago long, lanceolate. {fSefn!.^l^:^f^lV^J?v'. 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 diantaus 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 



rsolUcitans Walker (p. 660) 



mitcJiellw Dyar (p. 666) 

 nigromaculis Ludlow (p. 657) 

 tJiomtoni Dyar & Knab (p. 820) 

 podograpMcus 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) 

 varipalpus Coquillett (p. 646) 

 triseriatns Say (p. 764) 

 epactius Dyar & Knab (p. 643) 

 fluviatilis Lutz (p. 721) 



wo T> 1 i„i * _)j„ „!„«„ „™„ii „„—„•„, f awreostriota Grabham (p. 858) 



18. Basal lobe of side-piece small, narrow [fulvithorax Lutz (p. 846) 



falbonotata Coquillett (p. 855) 



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



liuscleii 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 bo raale specimens : 



fulvus Wied. provocans Walk. knabi Coq. 



vittata Theob. angustivittatus D. & K. Jiortator D. & K. 



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



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



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



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



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



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



LARViE (AisDES AND H^MAGOGTJS). 



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 



timaculatus Coquillett (p. 623) 

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



