PAL/EONTOGRAPHICAL SOCIETY, 1920. 



Bolton. Insects of Coal Measures. 



PLATE Vlll. 



lhM 



ia. 3 'i m 



2M 



1.2.4". 5. PHYLOBLATTA. 3. ARCHIMYLACRIDAE . 

 6.BLATT0ID WING FRAGMENT. 7. 8. HEMIMYLACRI S. 



J.WTutcher, photo London Stereoscopic Co. imp. 



