The Kangaroo Rat--Teeth of the Kangaroo Rat 199 Fore and Hind Foot of Hypsiprymnus 200 Skeleton of the Wombat 201 The Wombat--Lower Jaw of the Wombat 202 Teeth of the Wombat 203 The Koala 204 The Cuscus 205 The Vulpine Phalanger 206 The Squirrel Flying Phalanger 208 The Banded Perameles 210 The Dasyure 213 Teeth of the Dasyure--Brain of the Dasyure 214 Upper and Under View of Skull of Dasyure 215 The Dog-headed Thylacinus 216 Skeleton of the Dog-headed Thylacinus 217 The Brush-tailed Phascogale--The Antechinus 218 Opossum and Young _To face page_ 219 Teeth of the Opossum 219 Skeleton of the Crab-eating Opossum 220 The Crab-eating Opossum 221 Merian’s Opossum 222 The Yapock 223 Pelvic Arch of the Echidna 227 The Porcupine Echidna 228 Mouth and Nose-snout of Echidna 229 Jaws of the Duck-billed Platypus 231 Fore and Hind Foot of the Duck-billed Platypus--Shoulder-girdle and Sternum of the Echidna 232 The Duck-billed Platypus 233 The Imperial Eagle 235 Bones of Wing of Bird--Feathers of Wing of Bird 237 Parts of a Feather 238 Skeleton of Eagle 241 Skull of Young Ostrich from above and from below 242 Sternum of Fregilupus varius--Pelvis of an Adult Fowl, side view 243 Section of the Eye of the Common Buzzard 246 Digestive Organs of the Kingfisher 248 Front View and Section of Inferior Larynx of Peregrine Falcon 251 Diagrammatic Section of a Fowl’s Egg 252