ILLINOIS BIOLOGICAL 

 MONOGRAPHS 



Vol. VIII January, 1923 No. i 



THE HEAD-CAPSULE OF COLEOPTERA 



WITH TWENTY-SIX PLATES 



BY 



FENNER SATTERTHWAITE STICKNEY 



Price S2.00 



Published by the University of Illinois Pkxss 



itndes the auspices of the graduate school 



Ubbana, Illinois 



