LIST OF ILLUSTRATIONS [Saüba or Leaf-carrying Ant] [Saüba Ant—Female] [Climbing Palm (Desmoncus)] [Interior of Primæval Forest on the Amazons] [Amphisbæna] [Acrosma Arcuatum] [Assai Palm (Euterpe Oleracea)] [Bird-killing Spider (Mygale Avicularia) attacking Finches] [Ant-eater grappling with Dog] [Humming-bird and Humming-bird Hawk-moth] [Soldiers of different Species of White Ants—Ordinary Shape of Worker—Winged Class] [Acari Fish (Loricaria Duodecimalis)] [Flat-topped Mountains of Paráua-quára, Lower Amazons] [Heliconius Thelxiope—Heliconius Melpomene] [Musical Cricket (Chlorocœlus Tananá)] [Peuriríma Palm (Bactris)] [Peloæus Wasp building Nest] [Cells of Trypoxylon Aurifrons] [Melipona Bees gathering Clay] [The Jacuarú (Teius Teguexim)] [Acará (Mesonauta Insignis)] [Sarapó (Carapus)—Needle-fish (Hemaramphus)] [Bulging-stemmed Palm: Pashiúba Barrigudo (Iriartea Ventricosa)] [Uikí Fruit] [Pupunha Palm] [Blow-gun, Quiver, and Arrow] [Surubim (Pimelodus Tigrinus)] [Arrow used in Turtle Shooting] [Turtle Fishing and Adventure with Alligator] [Night Adventure with Alligator] [Umbrella Bird] [Scarlet-faced and Parauacú Monkeys] [Curl-crested Toucan] [Adventure with Curl-crested Toucans] [Suspended Cocoon of Moth] [Sack-bearing Caterpillar (Saccophora)] [Foraging Ants (Eciton Drepanophora)] [Foraging Ants (Eciton Erratica) constructing a Covered Road—Soldiers sallying out on being disturbed] [Masked-dance and Wedding-feast of Tucúna Indians] [Map 1] [Map 2] [Map 3]