CHAPTER XIX.

INSECT PLAGUES AND INSECT SERVICES.

The Universal Dominion of Insects--Mosquitoes--Stinging Flies--_Œstrus Hominis_--The Chegoe or Jigger--The _Filaria Medinensis_--The Bête-Rouge--Blood-sucking Ticks--Garapatas-- The Land-leeches in Ceylon--The Tsetsé Fly--The Tsalt-Salya-- The Locust--Its dreadful Devastations--Cockroaches--The Drummer--The Cucarachas and Chilicabras--Tropical Ants--The Saüba--The Driver Ants--Termites--Their wonderful Buildings-- The Silkworm--The Cochineal--The Gumlack Insect--Insects used as Food and Ornaments 221