. Biological and systematic studies on the Bombidae of Illinois. In Charge of Major Work Head of Department Recommendation concurred in: Committee on Final Examination 197771 UIUC /. BIOLOGICAL Aim SYSTEMATIC STUDIES ONTI^ BCMBIDAS OF the sujniner and autumn of 1910 the writer made somecollections and observations in order to get first hand informa-tion concerning the humhlebees found in the vicinity of Cham-paign and Urbana, Illinois. The following winter was spent inworking over the notes made and xnaterial collected, studying theliterature, and examining specimens in the col
. Biological and systematic studies on the Bombidae of Illinois. In Charge of Major Work Head of Department Recommendation concurred in: Committee on Final Examination 197771 UIUC /. BIOLOGICAL Aim SYSTEMATIC STUDIES ONTI^ BCMBIDAS OF the sujniner and autumn of 1910 the writer made somecollections and observations in order to get first hand informa-tion concerning the humhlebees found in the vicinity of Cham-paign and Urbana, Illinois. The following winter was spent inworking over the notes made and xnaterial collected, studying theliterature, and examining specimens in the collections of theUniversity of Illinois and the State Laboratory of Natural His-tory. Experiments in keeping hibernating queens and rearingparasites v;ere also undertaken. Further observations v/ere madeduring the spring of 1911 on the habits of over-wintered regarding their food and methods of founding colonies werenoted. Special acknowledgment must be made to Dr. J. W. Polsom,assistant professor of entomology, for valuable aid and helpfulsup:gestibiologicalsystem00will
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