324 
Psyche 
[December 
Claws with a tooth; meso- and metanotum united, an- 
tennae 15 jointed; no wings Troctinx 
Psoquillidx 
The few genera do not readily separate into groups. 
Embidopsocidx 
Two longitudinal veins unbranched Embidopsocinx 
Two longitudinal veins branched and connected 
Archipsocinx 
Empheridx 
Hind wings with median forked Empherinx 
Hind wings with median simple Psylloneurinx 
Perientomidx 
Anal and axillary end in one point antennae 13 jointed or 
a few more ; no closed cell near middle of fore wing ; media 
of hind wing simple Amphientominx 
Anal and axillary separate at tip ; usually a small closed 
cell near middle of fore-wings; median of, hind wings 
forked; antennae 20 or more jointed. Perientominx 
Psocidx 
1. In hind wing median vein forked; wings sometimes 
partly netted Calopsocinx 
Median vein of hind wings simple 2 
2. Areola postica (sometimes absent) free, or if con- 
nected to media then its end is as far out as end of 
stigma Cxcilinx 
Areola postica present and either united at top to 
media or connected by a cross-vein, and usually end- 
ing before end of stigma 3 
