PAL/EONTOGRAPHICAL SOCIETY, 1920 



Bolton. Insects of Coal Measures. 



PLATE IX. 



4-. 9 'z 



5. 3 4 



1. PHYLOMYLACRIS. 2-4. SOOMYLACRIS. 5. RTHOMYLACRI S. 

 6. ( BLATTOIDEA.) 7. 8. LEPTOBLATTINA. 



•J W. Tutcher , photo 



London Stereoscopic Co. imp. 



