423 



Land birds, 291 

 Larks, 301 



Lasius brunneus, 180 

 Leibnitz, 387 

 Lemuridse, 372 

 Lemuroidea, 372 

 Leopard, 364 



hunting, 365 

 Lepas, 92 

 Lepidoptera, 162 

 Lepidosiren, 209 

 Lepisma saccharina, 127 

 Lcpomis cyanellus, 215 

 Leporidaj, 250, 255 

 Leptoplana, 34 

 Lepus, 355 



americanus, 356 



aquaticus, 355 



campestris, 356 



palustris, 355 



sylvaticus, 355 

 LibellulidEe, 129 

 Life, Archaean, 382 

 origin of, 382 

 Limacidae, 83 

 Limicolse, 290 

 Limnaeus, 84 

 Limpets, 82 

 Limulus, 110 

 Linckia linckia, 56 

 Lion, 363 

 Lithobius, 111 

 Littorina, 83 

 Liver-fiuke, 36 

 Llama, 339 

 Lobster, 90, 99 

 Locustidse, 138 

 Locusts, 137 



seventeen-year, 143 

 Longipennes, 282 

 Loon, 281 



Lophobranchii, 212, 216 

 Lophophore, 48 

 Loris, 372 

 Lutra, 359 

 Lycoenidae, 173 

 Lycostidae, 108 

 Lymantriida?, 168 

 Lynx, 364 



Macaques, 375 

 Macheira, 102 

 Mackerel, 215 



Macrochires, 300 

 Macronucleus, 5 

 Macropodida;, 322 

 Macropus, 322, 323 

 Madreporic plate, 52 

 Malacostraca, 90, 92 

 Malpighian tubes, 120 

 Mammalia, 311 

 Man, 379 

 Manatee, 325 

 Mantidae, 136 

 Mantids, praying, 136 

 Marine worms, 68 

 Marmosets, 373 

 Marmot, 352 

 Marsupialia, 320 

 Marten, 360 



Maryland yellow-throat, 305 

 Mastigophora, 4 

 Maturation, 384 

 Maxilla, 133 

 Maxillary palpus, 133 

 May-flies, 127 

 Medusae, 22 

 Megachile acuta, 183 

 Megachiroptcra, 370 

 Mekuniplus olhnitis, 138 



fcmnr-ruhnnn, 137 



sprctus, 137 

 Meleagrina, 77 

 Meles, 360 

 Melipona, 184 

 Mendel's law, 391 

 Mephitis, 360 

 Mesoderm, 386 

 Mesoglea, 10, 17 

 Mesothorax, 133 

 Metabolism, 7 

 Metamorphosis, 26 

 Metathorax, 133 

 Metazoa, 10 



Microchiroptera, 370, 371 

 Micronucleus, 5 

 Microtus, 353 

 Migration, 274 

 Millepora alicornis, 25 

 Millipeds, 112 

 Milt, 212 

 Mimicry of hymenoptera, 175 



of insects, il9 



of viceroy, 172 

 Mink, 360 

 Mitosis, 383 

 Mniotiltida;, 304 



