. Biological and systematic studies on the Bombidae of Illinois. -pofO M M «k A •» M «k **C0 M M ^ 00 •vO rohTiiTNH fH H - vO O sj-H d-Cl H H H CM CM H CM. Borvbus awencanorum Genitalia of 6X 30. f

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RM2AFR7DP–. Biological and systematic studies on the Bombidae of Illinois. Bom bus pennsylvanicud Genitalia of d X 30. Bom bus fervicLiis Genitalia of dX 30

RM2AFR7M7–. Biological and systematic studies on the Bombidae of Illinois. Borvbus awencanorum Genitalia of 6X 30. f. Bom bus pennsylvanicud Genitalia of d X 30

RM2AFR88H–. Biological and systematic studies on the Bombidae of Illinois. lready given, the erectionif a new genus seems unwarranted. In regard to the specificname, the displacement of pennsylvanicus can be riade only on theassumption that it belongs where fervidus has stood and that thelatter name should be thrown out entirely. As an argumentagainst this, we ma;/ compare the cojnpleteness of Fabricius sup-plemented description of Bombus fervidus with the inadequatenessof DeGeers description of Apis pensilvanica. Altho it is mere guess-work to say what species DeGeer hadin mind, there are several reaso

RM2AFR8D5–. 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 ILLINOIS.During 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. -pofO M M «k A •» M «k **C0 M M ^ 00 •vO rohTiiTNH fH H - vO O sj-H d-Cl H H H CM CM H CM. Borvbus awencanorum Genitalia of 6X 30. f

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