INDEX 



527 



Octopods, 234 



Octopus, 233, 234 



Odobenidas, 318 



Odobenus obesus, 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 



Ornithodorus moubata, 212, 



Ornithorhynchus, 300 



Orohippus, 326 



Orthoptera, 162 



Ostracoda, 114 



Ostrea angulata, 227 

 O. edulus, 227 

 O. lurida, *226 

 O. virginiana, 225 



Ostriches, *279, 333 



Otariidae, 316 



Otter, 314 



Oviparous, 260 



Ovis arkal, *S 2 9, 33 

 0. canadensis, 304 

 O. musimon, 330 

 O. tragelaphus, 330 



Ovoviparous, 260 



Ox warble-fly, *39O 

 larva, *39i 



Oysters, 225 

 pearl, 228 



Oyster-shell scale, 447 



Pagarus sp., *ii9 

 Paleacrita, vernata, 429 

 Palinurus. 118 

 Paludicolae, 281 

 Pan troglodytes, 320 

 Papaipema nitella, 478 



Papirius maculosus, *i55 

 Paramcecium, structure and habits, 



29, *3Q 

 Parasita, 165 

 Parasites, and disease, 349 



denned, 350 

 Paris green, 414 

 Parlatoria pergandi, 456 

 Passeres, 283, 285 

 Paw cristatus, 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 

 Percida?, 253 

 Peripatus, 123 



P. eiseni, *i23 

 Periplaneta americana, 397 



P. auslralasia, 397 



P. orientalis, 397 

 Perissodactyla, 303 

 Petromyzon, 239 



P. marinus, *2^g 

 Pheasants, 282, 333 

 Phlososinus cristatus, injury, *5i4 

 Phlebotomus pappataci, 385 

 Phlegethontius quinquemacidata, 



*5 



P. sextata, 500 

 Phoca mtulina, 315 



P. grwnlandica, 316 

 Phocidae, 315 

 Phoebe, *4o6 



