For the last two seasons I have turned my attention more particularly to collecting the Hemiptera; and very naturally became deeply interested in the family of the Phytocoridæ, or Capsidæ, as they are generally called. They are the most distinctively northern family of the Heteroptera, as the Jassidæ are of the Homoptera; but they seem to have been neglected by European as well as American Entomologists, probably because of the variability of the species, and their frail structure which makes them difficult of preservation.