. 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
. 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 reasons for following Cresson rathdrthan Robertson. Cresson gives us the first adequate description of the spe-cies. His work was done forty years before that of Robertsonand his conclusions were accepted by ?-is contemporary, Packard,and by other writers since his time, including Robertson himselfas late as 189O. Pin lly, Robertson makes the change arbitrarilywithout giving any evidence or explanation. n M n s s e e ^ s e s c >» « > I u <0 s09 ess CSS. H r-i HI H H H o o o O O oto a>o o CO +> 0) o « rt « r> O 0) uo a o uo ts 0) •H +> to •H 4> -P O (|{+* o •H+>U a> HH O >»•H O o 1-1 +» 4*•H o m r::> +>P +> 4* +» +> +> cQ m 03 ca eo W W W W W +* P« » ID Ift II • ?P & • • . • • • JZi p p ft tz; SSilz; ^: +s +» +>(0 oa a cQ •H -H -H -rl w w w w +J +3 4J +J n) cj ciS (t5 ^ ^ ^ ^oS c4 0} cij H•H • H M H H HH HM M u u t3 £13 HH H H H H H H•* ^r-t r-* H H H r-i C Cmmmmmm •r-i •••»»<••»• CO o o !=» t3 t3
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbees, booksubjectthes
