1972] 
Kukalovd-Peck — Palaeozoic Insect Order# 247 
cn 
Figure 1. Sylvohymen sibiricus n.sp. ; Pr = bases betfow outgrowth of tergites. ffoletyper fore wing 
length 50 mm, width 9.1 mm. Lower Permian of Siberia. 
