92 



ILLISOIS BIOLOGICAL MONOGRAPHS 



[92 



EXPLANATION OF PLATE XX 



LATERAL ASPECT OF THE HEAD 



Fig. 413. Passalus cornutus. 



Fig. 414. Parandra brunnea. 



Fig. 415. Derobrachtis brunnetis. 



Fig. 416. Spofidylis hupresloides . 



Fig. 417. Glycobius speciosus. 



Fig. 418. Tclraopes ieiraophikalmits. 



Fig. 419. Donacia piscatrix. 



Fig. 420. Syneta ferruginea. 



Fig. 421. Criocerus asparagi. 



Fig. 422. Cryptocephalus quadruplex. 



Fig. 423. Chrysoclms auratus. 



Fig. 424. Leptinolarsa decemlineata 



Fig. 425. Diahrotica 12-punctata. 



Fig. 426. Blepliarida rhois. 



Fig. 427. Anoplitis gracilis. 



Fig. 428. Chelymorpha argiis. 



Fig. 429. PachymcTus gleditsiae. 



Fig. 430. Enpsalis minuta. 



Fig. 431. Itliyccrus novcboracensis. 



Fig. 432. Eurymycier fasciatus. 



Fig. 433. Rhinomacer pilosus. 



Fig. 434. Rhynchites bicolor. 



Fig. 435. AUelabits analis. 



aa antacoila 



a/ antafossa 



un antacoria 



ail antacava 



ccp cervepimeron 



CCS cervepisternum 



ce compound eye 



ch chitinized area 



cl clypealia 



cl corpotentorium 



CO. epicranial arm 



fe frontal ridge 



g" gula 



/ labrum 



