314 ALPHABETICAL INDEX. 
Nail-tailed Wallaby, 48-49 
nana, Didelphys, 211 
Dromicia, 113 
Phalangista, 113 
nasuta, Perameles, 140 
neilli, Dromicia, 112 
niger, Antechinus, 171 
nigro-aculeata, Proechidna, 247 
noctivaga, Didelphys, 207 
notatus, Belideus, 105 
Petaurus, 105 
Notoryctes, 187 
typhlops, 189 
Nototherium, 263 
inerme, 264 
mitchelli, 263 
Nototherium victorie, 264 
nove-hollandiz, Didelphis, 94 
nudicaudata, Didelphys, 201 
nudicaudatus, Pleopus, 74 
obesula, Perameles, 144, 145 
occidentalis, Chceropus, 146 
Pseudochirus, 96 
ochropus, Didelphys, 206 
og, Protemnodon, 257 
ogilbyi, Bettongia, 70 
Hypsiprymnus, 70 
Onychogale, 48 
lunata, 51 
unguifera, 49 
Onychogalea, 48 
annulicauda, 49 
fraenata, 50 
Opossum, 196 
Ashy, 207 
Azara’s, 197 
Chilian, 214 
Common, 196 
Grey, 212 
Grey-faced, 217 
Hensel’s, 218 
Lesser three-striped, 220 
Metachirus, 200 
Murine, 209 
Philander, 205 
Pigmy, 211 
Oposstm, Quica, 200 
Rat-tailed, 201 
Red-faced, 217 
Red-flanked, 216 
Shining, 211 
Shrew, 218 
Single-striped, 220 
Tehuantepec, 210 
Thick-tailed, 202 
Three-striped, 219 
Velvety, 213 
Water, 221 
Woolly, 206 
Yellow-flanked, 215 
orientatis, Cuscus, 84 
Didelphys, 84 
orientalis, Phalanger, $4 
ornata, Didelphys, 206 
ornatus, Cuscus, 86 
Phalanger, 86 
Ornithorhynchus, 231, 279 
agilis, 279 
anatinus, 231 
brevirostris, 231 
crispus, 231 
fuscus, 231 
hystrix, 241 
levis, 231 
paradoxus, 231 
oscillans, Triclis, 258 
Osphranter antilopinus, 19 
cooperl, 255 
isabellinus, 22 
otuel, Pachysiagon, 253 
Procoptodon, 253 
oweni, Echidna, 279 
Pachysiagon ferragus, 255 
otuel, 253 
pecilotis, Didelphys, 197 
palmata, Chironectes, 221 
Palorchestes azael, 251 
palpator, Dactylopsila, 103 
papuanus, Macropus, 33 
Petaurus, 106 
papuensis, Phalangista, $3 
Macropus, 33 
paradoxus, Ornithorhynchus, 2317 
