The Proceedings of the Iowa Academy of Science, Volums 2-4

abdomen abundant acid adults Agricultural College Ames angle antennæ apex Archæocidaris band base beds Big Sioux river Bluffs bristles broad brood brown C. R. Ball Carboniferous carene Casey clay clypeus color common corn smut Council Bluffs deposits Devonian dorsal drift elytra epidermal cells fauna feet female Flora frequent fuscous genitalia genus Geol grass Gray hadrome infrequent IOWA ACADEMY Iowa City joint Keokuk Lake larvæ lateral leaf length leptome limestone Little Rock loess mounds Low ground lower male margin Meek & Worthen mesophyll mestome bundles Michx middle Moines nearly occur ocelli palisade cells Pammel parenchyma plants plates posterior prairies pronotum prothorax rare river Rock scutellum segment shales side Sioux City B. W. slightly soil species specimens spines stereome surface thickness tibiæ tion trichomes Turin upper vein ventral vertex Waste ground weed wings woods yellow