FAM. MYCETOPHILID^ 
57 
46. Genus Synp;asta, Skuse. 
. Subcostal vein does not end in Rj when it is less 
than one-fourth the length of the basal cell R. 
k. Subcostal vein more than half as long as basal 
cell R. 
I. Costa very noticeably produced beyond the tip 
of the radial sector. 
m. The R-M crossvein is in the same line as 
the second section of the radial sector, 
forming apparently the basal section of 
the latter ; fork of the media slightly 
distad of the fork of the cubitus or equi- 
distant (PI, 6, Fig. 6,7). . . 47. Genus Docosia, Winnertz. 
mm. The R-M crossvein makes a distinct 
angle with the second section of the 
radial sector ; the cubitus forks far 
proximad of the basal extremity of 
the R-M crossvein {P\. 6, Fig. 8). 
Perhaps a synonym of Syntemna. 48. Genus Pal^odocosia, Meunier. 
II. Costa produced little if any beyond the tip of 
the radial sector. 
m. Fossil form. « Basal cell R very broad », 
(PI. 6, Fig. 9) 49. Genus Pal^otrichonta, Meunier. 
mm. Recent forms. Basal cell R of moderate 
width. 
n. Setae of the hind tibiae inconspicuous and 
short, not much longer than the dia- 
meter of the tibiae ; three ocelli, middle 
one small {P\. 6, Fig. 10). . . 5o. Genus Trichonta, Winnertz. 
nn. Setae of the hind tibiae stout, more than 
twice as long as the diameter of the 
tibiae; usually with tivo ocf///(PI.6, 
Fig. 25) 
63. Genus Dynatosoma, Winnertz. 
kk. Subcostal vein less than half as long as basal 
cell R. 
1. Cubitus forks far distad of the fork of the 
media, the branches of the former widely 
divergent. 
m. Costa but little produced beyond the tip oj 
the radial sector , anal vein short 
Fig. II) 
5i. Genus Phronia, Winnertz. 
mm. Costa considerably produced beyond the 
tip of the radial sector, anal vein 
nearly reaching the base of the fork of 
52. Genus Macrobrachius, Dziedzicki. 
