Sit c ' tuitnnn Arctic A'.r/>f(////<m, HH3-18 



EXPLANATION OF PLATE VII, 



Fig. 1. Sinniliiiin, sp. 4. maxilla of larva. 



'_'. Same, labium of larva. 



" :!. Same, mandible of larva. 



I. Xi.innl.imn, sp. 2, thoracic respiratory organ of pupa. 



."). rxil.otdni/i>H*. sp.? caudal fin of pupa. 



" (). Rhaniphonnfm n ittaciniflfx, apex of abdomen of male, lateral view. 



" 7. SiniH!inni, sp. 4, antenna of larva. 



s. Dolichopiix aasyops, antenna of male. 



" <. Same, hypopygial lamella of male. 



10. /'.x/7o/Y//////m.s-, sp.? thoracic respiratory organ of pupa, front view. 



11. Same, lateral view. 



" 12. Sit/iuiiutH, sp. 4, thoracic respiratory organ of pupa. 

 " Kj. Situ uli a in, sp. ;;, same as above. 



EXPLANATION OF PLATE VIII. 



Fig. 14. ()('<l(tnni(]<:n(t tnr<ni(li, anal spiracles of larva, one outlined only. 



I."). Kiii>liur<n-<'i-n (/clidii, spiracles of puparhim. 



Hi. C('i)ft<'H<ni/i(i sp.? cephalopharyngeal skeleton of larva, dorsal view of one-half. 



17. Ocddttitn/cHti Id/'dUd 1 !, larva, dorsal view. 



IS. CcpltcnoHii/id sp.? caudal end of larva. 



H. rhontini cnrnlrn, lateral view of head of male. 



20. Leptocera transversolis, wing. 



" 21. /'r/r/r/vV/ (irclicn, h(>ad of female, lateral view. 



EXPLANATION OF PLATE IX. 



22. Mi/dd'ind dlwunt. jMipariuin, lat(>ral view. 



2)5. Same, anal spiracles. 



24. Same, cephalopharyngeal skeleton of larva, lateral view. 

 2"). Same, apical segment of larva, dorsal view. 



21). Same, antepenultimate segment of larva, lateral view. 



27. Ari.rid lidrcdlix, posterior tibia of male, lateral view. 



25. Mi/flirind ohNctmi, head of male, lateral view. 

 2 ( .t. Same, fifth sternite of male, ventral view. 



'!(). Pogonomyioidzs atrata, posterior portion of cephalopharyngeal skeleton of larva, 



lateral view. 

 :il. Mi/fid ind ohxcurd, a])(>x of male adbomen, lat(>ral view. 



EXPLANATION KOH PLAT1-; X. 



FiU :!2. .I//./O/AS/.S, s|>.? head of female, lateral view. 

 '\'.*>. /l///o/;.s/.y oltcxa, head of male, lateral view. 

 '11. (;<>ndl.}n-rnx dlricnrnix, head of female, lateral view. 

 :{"). Scatophaga xniUti, fifth sternite of male, ventral view. 



Scatopkaga Inl/in/i, same as above. 

 :'>('). Allintii/in Htidiiiciil.dld, apical segments of abdomen of male, ventral view. 



me, antenna, let era! view. 



Same, apical segments of abdomen of male, lateral view. 

 : ''.. Hylemyia tirroxlicltdlix, fifth abdominal sternite of male, ventral view. 

 10. Same, hypopygiiini of male, one side, caudal view. 



