190 



AMERICAN HYMENOPTERA. 



PAGE 



Pratorum group 83, 184 



pratorum 184 



Psithyrus 173, 181 



pulcher ... 74, 77, 82, 90, 91, 98 

 puUatus 



80, 119, 121, 122, 128, 130, 133 



quadricolor 175, 181 



radoszkowskyi 186 



ramonensis 81, 140 



robustus . . 74, 75, 76, 78, 81, 141, 

 147, 150, 151, 154, 155, 157 



robustus 146, 147 



rubicundus .... 74, 77, 80, 162 



rubriventris 181 



rufocaudatus.75, 81, 151, 154, 155 



rufocinctus 139 



rupestris 182 



Schneider! 87 



scrimshiranus 184 



semivetulus 181 



sololensis 173, 174, 177 



solus 80, 117 



sonotHEe 75, 78, 82, 133 



sonorus 76, 79, 82, 119 



Soroeensis group 186 



soroeensis 186 



steinbachi . . 76, 78, 151, 154, 155 

 steindachneri . 75, 79, 82, 105, 138 



stevenii 187 



suckleyi 181 



sulfuratus 76, 78, 147 



Sylvarum group 187 



sylvarum 187 



sylvicola 180 



PAGE 



table of Bombus males .... 80 

 table of Bombus queens . . . .73 

 table of Bombus workers . . 76 

 tables of Psithyrus species . . 173 



tecumanus 81,150 



ternarius 180 



ternarius 138, 179 



Terrestris group 186 



terrestris 186 



thoracicus 102, 167, 168 



tricolor 175 



trinominatus 76, 78, 83 



Tristis group 187 



Unclassified names and descrip- 

 tions 177 



unifasciatus .... 123, 124, 128 



ussurensis 184 



variabilis 173 



velutinus 110, 112, 120 



venustus 136 



vestalis 181 



violaceous 110, 112 



violaceus 118, 120, 122 



vogti 155, 156 



volucelloides . 74, 77, 141, 155, 160 



vorticosus 182, 183, 184 



vosnesenskii .... 75, 78, 83, 84 



weisi . . 74, 76, 77, 78, 81, 83, 96, 



148, 151 



weisi 95, 151 



wilmattffi ... 75, 79, 91, 98, 100 



wurfieini 183 



Xylocopa 177, 178, 180 



zonatus 187 



