■102 



570- T. querci, Fitch. 



A sin.cfle specimen taken at Lancaster, July 24, 1889. 



5S0. T. rosae, Harris. 



Very abundant and destructive on rose bushes, June to Sept. 

 In a large number taken on the 8th of Sept. 1887, the females 

 outnumbered the males as ten to one. 



(Notk: Seven other species of the typhlocybina have been 

 taken within our territory which appear to be still undescribed. ) 



During the publication of this list one species has been added and two 

 others determined so it now includes 381 species representing 195 genera. 

 Of these 123 genera and 198 species belong to the suborder Heteroptera 

 and 72 genera and 183 species to the Homoptera. 



