100 
18. 
19. 
20. 
21. 
22. 
THE BLOWFLIES oF NortH AMERICA 
Front at narrowest 0.14 of head width in male, 0.28 in fe- 
male; parafaciale opposite lunule slightly narrower than 
distance between vibrissae in proportion 2.0:2.2 in male, 
cane only slightly wider in female, 2.0:1.9 (Nearctic) . . 
ea HEY ee Apaulina basingert, new species, p. 190 
Front at narrowest 0.15 of head width in male, 0.30 in fe- 
male; parafaciale opposite lunule wider than distance be- 
tween vibrissae in proportion of 2.4:1.8 in male, 3.6:3.2 in 
female” (Nearetic) ii 255 0.. .. 2s DOI 
£3878. & Apaulina avium (Shannon and Dobroscky), p. 186 
Reclinate frontoorbital bristles present in female; front at 
narrowest considerably wider than 0.05 of head width in 
male (except in aenea which has orange brown squamae), 
and wider than 0.20 in female; parafaciale opposite lunule 
in male narrower than half the distance between vi- 
brissae! 550. SNSL ee oe dic are uae taa ed terete ee 20 
Reclinate frontoorbital bristles absent in female; front at 
narrowest 0.05 of head width in male, 0.20 in female; 
parafaciale opposite lunule about half as wide as distance 
between vibrissae in male, in proportion 1.2:1.6 in female 
GNearctie) oro asics eas 60 0 0 so Pale woe epi ee 
be Gt Apaulina hirudo (Shannon and Dobroscky), p. 192 
Squamal lobes tinged with orange or brown ............ 21 
Squamal. lobes clearly white! «.4:. 2: ic. 3. 4 23 
Squamal lobes brown in male but yellowish or orange in fe- 
male; width of parafaciale opposite lunule less than dis- 
tanee between vibrissae in the proportion 1.2-1.5:2 in 
male, 1.6:2 or nearly equal in female; front at narrowest 
0.06 of head width in male, 0.24 in female; male 
body color metallic blue but rome body color aeneous 
or! CUpreous green i.c\. ese oe ie 22 
Squamal lobes infuseate in both sexes; parafaciale opposite 
lunule less in width than distance between vibrissae in the 
proportion 1.8:2.0 in male, 1.6:1.8 in female; front at 
narrowest 0.07 of head width in male, 0.27 in female; body 
eolor metallic blue in both sexes. (Nearctic)........... 
.. Apaulina hesperva (Shannon and Dobrosecky), p. 192 
Male with parafaciale opposite lunule and distance between 
vibrissae in the proportion 1.2:2.0; female body color 
bright aeneous green with silvery pollen, the fourth ab- 
dominal segment cupreous with whitish pollen, the squa- 
mal lobes strongly tinged with orange; middle femur with 
