236 THE SCOLYTID BEETLES. 



Dendroctonua brevicomia — Continued. Page. 



larva 84 



paired species 211 



pupa 83-84 



Dendroctonus californicus, historical 4 



Dendroctonus convexifrons — 



adult, variations, distinctive characters, re visional notes 87-88 



bibliography 90 



distribution 89-90 



galleries 89 



host trees 90 



identified specimens 90 



in synopsis of characters 67, 70 



larva 88-89 



pupa 88 



Dendroctonus dietzi, historical 4 



Dendroctonus engelmanni — 



adult, variations, distinctive characters, revisional notes 130-131 



bibliography and synonymy 133 



distribution 132 



galleries 132 



host trees 133 



identified specimens 133 



in synopsis of characters 71 



larva 131-132 



paired species 211 



pupa 131 



Dendroctonus fletcheri, historical 4 



Dendroctonus frontalis — 



adult, variations, distinctive characters, reAosional notes 91 



bibliography and synonymy 95 



distribution 94, 211 



galleries 94 



historical 3 



host 95 



identified specimens 95 



in synopsis of characters 70 



larva 94 



length of imago 10 



paired species 211 



pupa 93-94 



pupal cell 204 



terminal burrows 203 



Dendroctonus jeffreyi — 



adult, variations, distinctive characters, note 114-115 



in synopsis of characters 71 



larva 115-116 



pupa 115 



Dendroctonus juniperi, historical 3 



Dendroctonus keeni, historical 4 



Dendroctonus mexicanus — 



adult 97-98 



distribution 98 



identified specimens 98 



