INDEX 



527 



Octopods, 234 

 Octopus, 233, 234 

 Odobenidae, 318 

 Odobenus obesits, 318 

 Odocoileus, 303 

 Odonata, 158 

 Oestridae, 389 

 Oestrus ovis, 391 

 Oncorhynchus, 250 

 One-cell animals, 39 

 Onion-maggot, 488 

 Onycophora, 123 

 Ophibolus, 269 

 Ophiuroidea, 95 

 Opossums, 300 

 Orang-utans, 319 

 Orca, 303 



Orcamnos montanus, 304 

 Orchard pests, 421 

 Orders, denned, 52 

 Organs and functions, 



principal systems, 43 

 Ornithodonts moubata, 212, *3s6 

 Ornithorhynchus, 300 

 Orohippus, 326 

 Orthoptera, 162 

 Ostracoda, 114 

 Ostrca angulata, 227 



O. edulus, 227 



O. lurida, *226 



0. virginiana, 225 

 Ostriches, *279, 333 

 Otariidae, 316 

 Otter, 314 

 Oviparous, 260 

 Ovis arkal, *^2g, 330 



O. canadensis, 304 



0. musimon, 330 



0. tragela pints, 330 

 Ovoviparous, 260 

 Ox warble-fly, *39O 



larva, *39i 

 Oysters, 225 



pearl, 228 

 Oyster-shell scale, 447 



Pagarus sp., *ng 

 Paleacrila, vernata, 429 

 Palinurus. 118 

 Paludicolse, 281 

 Pan troglodytes, 320 

 Papaipema nitella, 478 



Papirius maculosus, *i55 

 Paramoecium, structure and habits, 



29, *3o 

 Parasita, 165 

 Parasites, and disease, 349 



denned, 350 

 Paris green, 414 

 Parlatoria pergandi, 456 

 Passeres, 283, 285 

 Paw cristalits, 333 

 Peach-borer, 434 

 Peach twig-borer, 435 

 Peacocks, 332 

 Pear-leaf blister-mite, 434 

 Pearl-oysters, 228 



shell, *229 

 Pearls, 77 



and mussels, 220 

 Pear thrips, *433 

 Pea aphis, 480 



weevil, 478 

 Pebrine, 364 

 Pecten, 224 

 Pediculidae, 392, 393 

 Pediculus capitis, 393 



P. vestimenti, *392, 393 

 Pegomyia brassicce, 482 



P. ceparum, 488 

 Pelecypoda, 221 

 Pellagra, 384 

 Pemphigus beta, 484 

 Pentacrinus sp., *g6 

 Perch, 253 

 Percidte, 253 

 Peripatus, 123 



P. eiseni, *i23 

 Periplaneta americana, 397 



P. australasia, 397 



P. orient alls, 397 

 Perissodactyla, 303 

 Pelromyzon, 239 



P. marinus, *239 

 Pheasants, 282, 333 

 Phlceosinus crislatus, injury, 

 Phlebotomus pappataci, 385 

 Phlegelhontius quinquemaculata , 

 *5oo 



P. sextata, 500 

 Phoca mtulina, 315 



P. grcenlandica, 316 

 Phocidas, 315 

 Phoebe, *4o6 



