_Neuroptera._--_Perithemis domitia_ Dru., _Enallagma_ sp. _Hemiptera._--_Adelphocoris rapidus_ Say, _Lygus pratensis_ Linn, (tarnished plant bug). _Coleoptera._--_Chauliognathus marginatus_ Fabr. (margined soldier beetle), _Diabrotica 12-punctata_ Oliv. (southern corn rootworm). _Lepidoptera._--_Pieris protodice_ Bd. (imported cabbage butterfly), _Heodes hypophleas_ Bd., _Lycaena comyntas_ Gdt., _Hylephila campestris_ Bd., _Scepsis fulvicollis_ Hubn., _Ancyloxypha numitor_ Fabr., _Pholisora catullus_ Fabr., _Pyraustid_ sp., _Loxostege similalis_ Gn. (garden webworm), _Thecla melinus_ Hubn., _Colias philodice_ Gdt. (the common sulphur butterfly), _Tarachidia caudefactor_ Hubn., _Pyrameis atalanta_ Linn., Drasteria (2 species), _Diacrisia virginica_ Fabr. (the woolly bear). _Hymenoptera._--_Halictus lerouxi_ Lep., _H. provancheri_ (sweat bee), _H. pectoralis_ Sm. (sweat bee), Halictus (3 unidentified species), _H. legatus_ Say, _Bombus affinis_ Cr., _B. impatiens_ Harris (bumblebee), _Melissodes bimaculata_ Lep., _Polistes pallipes_ Lep. (paper wasp), _Megachile_ sp. (leaf-cutter bee), _Coelioxys octodentata_ Say, _Xylocopa virginica_ Drury (common carpenter bee), _Pompiloides_ sp., _Apis mellifica_ Linn, (honeybee), _Philanthus punctatus_ Say, _Sphex nigricans_ Dahlb. (caterpillar hawk), _S. pictipennis_ Walsh (caterpillar hawk). _Diptera._--_Archytas analis_ Fabr., _Chrysomyia macellaria_ Fabr. (screw-worm fly),. _Pollenia rudis_ Fabr. (cluster fly), _Ocyptera carolinae_ Desv., _Trichophora ruficauda_ V. D. W., _Eristalis arbustorum_ Linn., _Physocephala tibialis_ Say. AT AMES, IOWA. _Hemiptera._--_Lygus pratensis_ Linn., _Adelphocoris rapidus_ Say, _Coleoptera._--_Coccinella transversoguttata_ Fabr. _Lepidoptera._--_Eurymus eurytheme_ Bdv., _Chrysophanus_ sp., Lycaena (2 species),. _Libythea bachmani_ Kirtland, _Pieris rapae_ Linn. _Hymenoptera._--_Angochlora_ sp., _Apis mellifica_ Linn., _Colletes_ sp., _Halictus lerouxi_ Lep., _H. provancheri_ D. J., _Halictus_ sp., _Elis_ sp., _Calliopsis andreniformis_ Smith, _Polistes_ sp., _Sphex_ sp., _Eumenes fraterna_ Say, _Sceliphron_ sp., _Isodontia harrisi_, Fern., _Cerceris_ sp., _Oxybelus_ sp. _Diptera._--_Syritta_ sp., _Paragus_ sp., _Chrysomyia macellaria_ Desv., Syrphidæ (2 unidentified specimens). EFFECT OF MOISTURE UPON THE PRODUCTION OF MELILOTUS ALBA SEED.