58 



ILUNOIS BIOLOGICAL MONOGRAPHS 



1290 



EXPLANATION OF PLATE 



VENTRAL ASPECT OF THE HEAD 



fig. 16. EpUachna borealis. 



The Label Pg for the palpiger is wanting. 

 Pig. 17. Chilocorus bivulnerus, caudal aspect, 

 fig. 18. Chilocorus bimdnerus. 

 Fig. 19. MegiUa maculata. 



The Label su for the submentum b wanting. 

 Fig. 20. Eippodamia 13-pundata. 



The Label lig for ligula is wanting. 

 Pig. 21. Eippodamia convergens. 



mxpi maxillary paljxit 



of occipital forunen 



pf palpiler 



pg palpiger 



pt pretentorina 

 ss+ca fused sdpes aod cardo 



nt submentum 



sup supratentorium 



ts tactile setae 



