Through a pocket lensNote 17 — Chapter III · COCKROACHES; EARWIGS; THE GREAT GREEN GRASSHOPPER; THE WATER SCORPION; THE WATER BOATMAN; CORIXA.Reading editionCambridge Natural History, v. 231.◇Copy noteReturn to CHAPTER III COCKROACHES; EARWIGS; THE GREAT GREEN GRASSHOPPER; THE WATER SCORPION; THE WATER BOATMAN; CORIXA.