CONTENTS 



PAGE 



Geography and physiography of the Cayuga Lake Basin 182 



Climatology of the basin 187 



The basin as a floral and a faunal area 192 



Check list of genera and species 194 



Distribution and range of the family 196 



Collections 202 



Comparison of Cayuga Lake Basin with the State as a whole 204 



Theories of origin and paths of migration 204 



Keys to genera and species of the Cayuga Lake Basin, wiA technical descriptions and 



life histories 207 



Subfamily Centrotinae 209 



The genus Microcentrus Stal 209 



Subfamily Membracinae 212 



The genus Campylenchia Stal 212 



The genus Enchenopa A. & S 214 



Subfamily Smiliinae 217 



The genus Ceresa A. & S 217 



The genus Stictocephala Stal 233 



The genus Acutalis Fairmaire 236 



The genus Micrutalis Fowler 237 



The genus Carvnota Fitch .■ 239 



The genus Thelia A. & S 243 



The genus Glossonotus Butler 245 



The genus Heliria Stal 248 



The genus Telamona Fitch 249 



The genus Archasia Stal 265 



The genus Smilia Germar 266 



The genus Cj'rtolobus Coding . 267 



The subgenus Atymna Stal 277 



The subgenus Xantholobus Van Duzee 280 



The genus Ophiderma Fairmaire 284 



The genus Vanduzea Coding 287 



The genus Entylia Germar 289 



The genus Publilia Stal 291 



Other species 293 



Taxonomic position of Homoptera 293 



External anatomy of the Membracidae 295 



Technique . . . . , 296 



Terminology 297 



General structure 297 



The head 300 



The thorax 310 



The prothorax 311 



The mesothorax 315 



The metathorax ". 320 



The wings 326 



The legs 330 



The abdomen 343 



177 



