PAL-CONTOGRAPHICAL SOCIETY, I92O. 



Bolton. Insects of Coal Measures. 



PLATE Vlll. 



2.M 



1.2.4^.5. PHYLOBLATTA. 3. ARCHIMYLACRIDAE . 

 6.BLATTOID WING FRAGMENT. 7. 8. HEMIMYLACRIS. 



J.W.TutcKer, photo. London Stereoscopic Go.il 



