PAL/EONTOGRAPHICAL SOCIETY, I92O 



Bolton . Insects of Coal Measures. 



PLATE Vlll. 



It.'l 



2.M 



1. 2.4-. 5. PHYLOBLATTA. 3. ARCHIMYLACRIDAE . 

 6.BLATTOID WING FRAGMENT. 7. 8. HE MIMYLACRI S. 



W. Tutcher, pKoto London Stereoscopic Co imp 



