10. 
Wile 
12. 
13. 
14. 
15. 
16. 
ie 
31 
. Sides of front hairy except a narrow space along each eye ..... (p. 44) Alophora. 
Sides of front bare except two or three rows of hairs along each side of the 
ALOMGAl eV MG ba steer e sas ccs ste sles al skic ce semen cesses 3 (p. 43) Phorantha. 
alpiepresentenwelledevelope dices. aecemaee seme alee 2 = cisel= ss nie ae = le ee i 
Palpi absent or rudimentary, facial ridges never bristly on more than the lowest 
FOUTL ITS GRVeLMMD ALO i. s/s eee Rossen Sa ee Ne eine sisi (wates sais acces woes 9; 
. Eyes bare, or with indistinct, short, sparse hairs...-....---.----.----.------ 10. 
Eyes distinctly hairy, Sane cell ending far before the wingtip, files of face 
bare, upper edge of third antennal joint concave .-...---.-(p. 86) Linnamyia. 
Face on the sides bearing hairs or macrochzetx...--...-.-.-----.----------- late 
Baeeonguhe sid essDan@laee 2s oe sks = sce e oases eee es cece <2 e as sae Sees 14, 
Head at the vibrissx as long as at base of antenn, apical cell ending far before 
THEIEXbLEMO WING Piss sce fess = os sas 2/22 ss heen oe Gece assess jcc eee sees 12. 
Head at vibrisse much shorter than at base of antenn:e, sides of face bare except 
the row of three or four macrochete on each; apical cell ending close to the 
GRTROMNG) WHat Dose Shon Bban hoo Sead oSClE teach SoEobeee (p. 126) Atrophopalpus. 
With one or more stout macrochietie on each side of face near lower end of the 
CONC ate sisal hen eras shisicisin a one a's sderjealS is nna/a'slasiatn sae mcinee as ols mein 13. 
Without such macrochetzx, body very robust ..---.-.---.-.----- (p. 145) Epalpus. 
Each side of the face bearing one macrochita, body slender.(p. 139) Trichophora. 
Each side bearing two or three macrochietie, body robust ....(p. 140) Cuphocera. 
Proboscis at most only slightly longer than height of head....-........-.---- ily, 
Proboscis over twice as long as height of head, head at vibrissie longer than 
at base of antenne, apical cell ending close to the wingtip. .--- (p. 73) Beskia. 
Horizontal diameter of head at the vibrissze as long as at base of antennw... 16 
Horizontal diameter of head at vibrisse much shorter than at base of antennie, 
apical cell open, endiug considerably before the extreme wingtip. .(p. 66) Ervia. 
Apical cell open, ending at the extreme wingtip ----..----..---- (p. 67) Apinops. 
Apical cell closed, its petiole longer than the small crossvein, ending far before 
GhierextreMmerwiMOolprss <sos at: ada ys ae cs sine ecibictes Seis s/=iaci-sis = =i (p. 86) Ocyptera. 
MIMS heVelM DALO meres = oe Serato Sale Se oe ares, Sees ae os Sie SSR owe sewn ecee cee ee OO! 
First vein wholly or partly bristly, two or more pairs of frontal bristle below 
base of antenn, vibrissee nearly on a level with front edge of ora! margin, 
antenne reaching at least to lowest fifth of face......-...-.-...----.-.--- 18. 
18:-Byes bare or with indistinct short sparse hairs .--..-.--..-..----------.----- 20. 
Eyes distinctly hairy, head at the vibrissie noticeably shorter than at base of 
antenne, sides of face bare, apical.cell open.--.......-.-..---.------------ 19. 
19. Facial ridges bristly on more than the lower half, third vein bearing from one to 
thmeesprishlesin eared tsiDAsee acess aa once sd tscase ae sce (p. 65) Hypocheta. 
Facial ridges never bristly on more than the lowest fourth, third vein bristly 
more than halfway from base to the small crossvein ---- -- (p. 90) Exoristoides. 
20. Diameter of head at vibrissie as long as at base of antennie ..--..---------- 26. 
Diameter of head at vibrisse noticeably shorter than at base of antennew -..- 21. 
21. Tip of apical cell far before the extreme tip of wing.-......-.-...---------- 23. 
Tip of apical cell at or close to the extreme tip of wing..-..-.-.-...----.---- 22. 
22. Penultimate joint of arista over three times as long as broad, facial ridges never 
brshiyon more-bhan: whe lowest) fifth =o= 222-21 --- sl 2-2 - (p. 57) Plectops. 
Penultimate joint of arista not, or only slightly, longer than broad, facial ridges 
bristly, on/at least the lower half--2.-------.-.-..---.---- (p. 59) Chatophleps. 
POMPANICAlECe llbopeninserns sana. ens cores tens Nese sa rence en malyaatce mens saatee 24, 
Apical cell closed and long petiolate..........---..----..---- (p. 126) Metacheta. 
24. Sides of face destitute of rows of macrochate...-...-...-.----.----------- 20. 
Sides of face each bearing a row of macrochiwtie which descends almost to the 
ONS ENG bOI TLDS GiG) BeetiBodees Doocnbine op seoc bSneoriereete (p. 127) Chatoplagia. 
