54 



ILLINOIS BIOLOGICAL MONOGRAPHS 



[286 



EXPLANATION OF PLATE 



CEPHALIC ASPECT^OF THE HEAD 



Fig. 4. EpUackna borealis. 



Fig. 5. CkUocorus bivulnerus, lateral aspect. 



Fig. 6. CkUocorus bivulnerus. 



The label els for the clypso-labral suture is wanting. 



Fig. 7. Megilla tnacidata. 



Fig. 8. Hippodamia 13-punciata. 



Fig. 9. Hippodamia corner gens. 



mco mandacoria 



mxpl maxillary palpus 



oc ocelli 



pc predypeus 



pd precoba 



pf palpifer 



pt pretentorina 



ss+ca fused stipes and cardo 



supt supratentorina 



t vertex 



