234 THE SCOLYTID BEETLES. 



Cryphalus — Page. 



host plants 208 



posterior wings 180 



types of genera 221 



Crypturginse, in key to subfamilies 225 



Crypturgus — 



distribution 210 



host 209 



posterior wings 180 



Cyllene, abdominal stemites 182 



Dendroctonus — 



abdomen 35-39 



abdominal pleurites ' 38-39 



abdominal spiracles 182 



abdominal tergites 180-181 



anatomical 5-6 



article 1-164 



bibliography 159-164 



bibliography and synonymy 80-81 



brood galleries 203 



comparison of head with Pissodes strobi 11 



comparison of head with Pterostichus 11, 12, 21 



distribution 210 



eggs 64 



epistoma 175 



food habits 199 



head 11-21 



host : 209 



internal anatomy 51-52 



larva 57-64, 197 



larval mines 204 



legs 39-40 



mesoplem-a 29-30 



mesosterna 30 



mesotergum 28-29 



mesothoracic and metathoracic wings 42-43 



mesothoracic wings or elytra 49-51 



mesothorax 28-30 



metapleura 34-35 



metasterna 35 



metatergum 30-33 



metathoracic or hind wings 43-49 



metathorax 30-35 



nomenclature 7-9 



original description and translation 4 



progressive modification of characters 67-68 



prothorax , 26-28 



pupa 53-57 



pupal cell 204 



reproductive organs 188, 189, 190 



revisional notes 5 



spiracles 39 



secondary sexual characters 52-53, 196 



thorax 22-51 



wings 40-51 



