424 
THE STUDY OF INSECTS . 
and with most of the segments wider than 
long (Fig. 533); wings very broad (Fig. 534). 
p. 451.SlMULIIDiE. 
KK. Antennae either bushy, being densely 
clothed with long hairs or slender with nar¬ 
row segments; wings narrow or moderately 
broad. 
L. Wing-veins well developed on all parts of 
the wing. 
M. Vein IIIi ending at or near the end of 
the second third of the costal margin. 
p. 449 .OrPHNEPHILIDjE. 
MM. Vein IIIi ending on the outer margin 
of the wing (Fig. 509). p. 436. . Dixid/E. 
LL. Wing-veins much stouter near the costal 
margin of the wing than elsewhere (Fig. 
517). p. 440. CHIRONOMIDjE. 
CC. Antennae either consisting of four or five distinct segments 
or consisting of five or more segments, with those beyond the 
second more or less closely consolidated so as to appear as a 
single segment consisting of several subsegments (Figs. 489.490, 
492, and 537); cell VIII closed by the coalescence of the tips of 
veins Vila and IX, or greatly narrowed at the margin of the 
wing; palpi rarely elongate, and composed of from one to three 
segments. 
D. Antennae consisting of four or five distinct segments, 
empodia wanting or bristle-like. 
E. Vein Ills, not curved forward towards the costal margin 
of the wing (Fig. 559). p. 460. Asilid^ 
EE. Vein Ills curved forward towards the costal margin of 
the wing (Fig. 561). p.461. Midaid^e. 
DD. Antennae consisting of five or more segments, but with 
those beyond the second more or less closely consolidated ; 
empodia resembling pulvilli in form (Fig. 495). 
E. The branches of vein III crowded together near the 
costal margin of the wing, and the first cell V 2 unusually 
short and broad (Fig. 545). p. 455. STRATlOMYllDiE. 
EE. Venation of wings normal. 
F, The alulets large, p.453 .Tabanid^e. 
FF. The alulets small or wanting, p. 456.. ,... LeptiDjE. 
BB. Antennae consisting of not more than three segments; the 
