Through a pocket lensNote 23 — Chapter III · COCKROACHES; EARWIGS; THE GREAT GREEN GRASSHOPPER; THE WATER SCORPION; THE WATER BOATMAN; CORIXA.Reading editionIntroduction to Entomology, letter xi.◇Copy noteReturn to CHAPTER III COCKROACHES; EARWIGS; THE GREAT GREEN GRASSHOPPER; THE WATER SCORPION; THE WATER BOATMAN; CORIXA.