TABLE OF CONTENTS xi 



PAGE 



Chapter XI. Juan Vinas — The Waterfalls 191-208 



Waterfalls along the railroad, nearer and farther — Violent discharge of 

 pollen — Waterfall-inhabiting dragonflies and their larvae — Thaumat- 

 oneura and its male dimorphism — Insects as distributors of diatoms — 

 An insect like a winged seed — Crickets and other Orthoptera by the 

 waterfalls — Spiders and fresh-water crabs — The peculiar larvae of the 

 dragonfly Cora — Quebrada Honda and pirates of the seventeenth cen- 

 tury — A lizard hunting insects — Juan Vinas in February — Landslide 

 at the nearer waterfall. 



Chapter XII. Juan Vinas — The Reventazon Valley below the 



Laguna 209-229 



Rio Naranjo — Government Road — Old trails — Indian hut — Indian 

 family, maize — Slides — Climbing the canon side — Forest in river 

 bottom — Seasonal changes in foliage — Begonias — Conspicuous flowers 

 — Kites — A vain lizard — A handsome snail — Insect seasons — Morphos 

 and Owl butterflies — Boulder-haunting moths — Odd caterpillars — 

 Noticeable beetles — Wasp and spider — Wasps' nests — Katydids and 

 walking-sticks — Shade-loving dragonflies — Very long dragonflies. 



Chapter XIII. Juan Vinas — The Tenants of Bromeliads 230-243 



Bromeliads and their distribution — Animals in bromeliads: Big-jawed 

 ants, Dragonfly larvae, Pseudoscorpions — Beetles — Earthworm — 

 Scorpion, Snails — Earwigs — Planarians — Rearing and transformation 

 of the dragonfly Mecistogaster modesius — Possible origin of its brome- 

 lladlcolous habit and long body — Fauna of one bromeliad — Elements 

 of bromeliad fauna, their inter-relations. 



Chapter XIV. Turrialba and Peralta 244-267 



The town and volcano of Turrialba — Potrero on the banks of the Rio 

 Turrialba, earthworms in bromeliads, Peripatus, jicara, manzana rosa, 

 constricted trees, cacao, basilisk — Rio Azul — Snakes, yuca, a reason 

 for collecting butterflies — Potreros of the Rio Colorado, parrakeets, 

 loro, a shade-loving dragonfly — A dense forest, ants' nests on low 

 grass, an ethereal butterfly. 

 The railroad station at Peralta, a gay-legged bug, a dragonfly in the rain, 

 Costa Rican toucans, Hetaerina dragonflies — The Laguna, shade- 

 loving dragonflies and butterfly, the mistake of a walking-stick, horse- 

 flies and paint, a striking dragonfly, disintegrating rock, heliconias and 

 mosquitoes breeding in them — The forest, monkeys, Megaloprepus 

 and armadillo — The Rio Reventazon, floods, cable-car, basilisks, bobos 

 — Rio Chiriqui, a migrating moth, lianas, Megaloprepus again, copper 

 and blue dragonflies, Costa Rican deer — Toucans and parrakeets con- 

 trasted — Good Friday on the railroad — Blood-sucking flies. 



