3 l6 
The Two-winged Flies 
Fig. 433 - Fig - 434 - 
Fig. 433.—Net-winged midge, Bibiocephala elegantulus, female. (Natural length of 
body, § inch.) 
Fig. 434.—Mouth-parts of female net-winged midge, Bibiocephala doanei. l.ep ., labrum- 
epipharynx; md., mandible; mx., maxilla; mxl. y maxillary lobe; mxp., maxillary 
palpus; li., labium; 'pg., paraglossa; hyp., hypopharynx. (Much enlarged.) 
Fig. 435.—Heads of female (at left) and of male (at right) of net-winged midge, Bibio¬ 
cephala comstocki , showing division of eyes into two parts, the upper part with fewer 
and larger facets than the lower part. (Much enlarged.) 
