60 ILLINOIS BIOLOGICAL MONOGRAPHS [292 



EXPLANATION OF PLATE 



VENTRAL ASPECT OF THE HEAD 



Fig. 22. CoccineUa 9-notata. 



Fig. 23. Anatis 15-punctata. 



Fig. 24. Adalia bipunctata. 



Fig. 25. Microweisea misella. 



Fig. 26. Scymnus sp. 



Fig. 27. Hyperaspis binotata. 



dt clutinoas band mzc maxacoria 



I gula mx^ maxillary palpua 



ta galea pf palfufei 



It gena ft palpiger 



lie labiacoria M+ca fused stipes and caido 



Ht ligula su submentom 



Upl labial palpus U tactile letae 



