49 



Diabrotica loin/iconiis Say. October 6, 7. 



Rare in the bunch-grass, except in fall, when it was numerous 

 in flowers. 



Blcpharida rhois Forst. 



Commonly found on species of sumac, upon which the larva is 

 often seen feeding. The adult has greatly enlarged hind femora. 

 Occurs in early summer. Very scarce in 1910. 



Oedioiiycliis (jibbifarsa Say. April 4. 



Commonly found hibernating in sheltered places. Occurs in 

 summer on various flowers. Under log in bunch-grass near Devil's 

 Hole. 



Disonycha pcnnsyhanica 111. April 4. 



Common in moist meadows or swamp borders, hibernating under 

 cover. In sandy regions it is associated with willow. Throughout 

 Illinois, more frecjuent toward the north. Under log in bunch-grass 

 near Devil's Hole. 



Disonycha yvittata Say. 



Associated with willow ; taken at the Devil's Xeck, Waukegan, 

 Grand Tower, and in the sand-dunes of northwestern Indiana. All 

 summer. 



Disonycha tvianijularis Say. June 28, April i, 4, 8. 



Probably the commonest flea-beetle in the sand regions, and in 

 other habitats throughout the state. Hibernates, being found under 

 logs in spring. Said to be associated with Chcno podium and Ania- 

 ranthus. Found under logs on the border of a cultivated field, and 

 in the bunch-grass. 



Haltica fuscoaenea Melsh. June 6, 8, July 22, August 12. 



Not very abundant ; usually found in dry or sandy regions, as- 

 sociated with OcnotJicra biennis, its food plant. Hart took it on 

 this plant at the Devil's Hole, and at other places in the neighbor- 

 hood of Havana. 



Brnchus crucntatus Horn. July 16. 



On Cassia chantacchrista, probably breeding in the seeds. An 

 insect of the blowsand association. Recorded from New Jersey, 

 Georgia, Illinois, and Texas. This species is a member of the family 

 BrucJiidac, which constitutes a small group of beetles related to the 

 Chrysoniclidae on one hand and to the Rhynchophora on the other. 

 They eat out the inside of seeds, especially those of Leguminosae, 

 and are known as pea-weevils. 



