Libellulidae, 345 
Lieberkiihnia, 16 
Ligula, 104, 105, 376 
Lima, 195 
Limicolae, 144 
Limnadia, 260 
Limnaea, 109, 208 
Limnocodium, 60 
Limpet, 197 
Limulus, 95, 389 
Lineus, 115, 123 
Lingula, 169, 174, 177 
Lingulidae, 176 
Lipocephala, 190 
Lipura, 333 
Lissoflagellata, 23 
Lithamoeba, 10 
Lithobius, 310 
Littorina, 203 
Dizzia, 55 
Lobosa, 9 
Locusta, 340 
Locustidae, 339 
Loligo, 212, 222 
Longicorns, 361 
Lophopus, 180, 184 
Lophyrus, 379 
Loxosoma, 186 
Lumbricomorpha, 144, 
150 
Lumbricus, 34, 140, 144, 
149 
Lung-books, 398 
Lycosa, 416 
Lycosidae, 415, 416 
Lytta, 359 
MACHILIS, 334 
Macrobdella, 137 
Macrogonidia, 23 
Macrolepidoptera, 352 
Macrostoma, 334 
Macrura, 268, 286 
Mactra, 192 
Madrepora, 68, 71 
Madreporic plate, 227, 228 
233 
Malacobdella, 
122 
Malacostraca, 254, 
279 
Malpighian tubules, 292, 
312, 325, 328, 
350, 377, 398, 
418 
Mantidae, 337 
Mantis, 337 
Mantispa, 348 
Manubrium, 53 
Masaridae, 384 
115, 
INDEX 
455 
Maxillary gland, 257, 262, 
265, 268 
Meandrina, 71 
Medusa, 47 
Megascolides, 
147 
Meloe, 359 
Meloidae, 359 
Melolontha, 322, 358 
Mentum, 323 
Mesoderm, 36, 40 
Mesogloea, 36, 47, 58, 63, 
72, 79, 93 
Mesosoma, 390 
Mesostoma, 82, 94 
Metagenesis, 49 
Metamorphosis, 332 
Metaphyta, 3 
Metasoma, 390 
Metazoa, 3, 36 
Microcotyle, 111 
Microgonidia, 23 
Microlepidoptera, 351 
Microstoma, 89, 90, 92 
Millepora, 58 
Milleporidae, 57 
Mimicry, 337, 359, 374 
Mnestra, 207 
Moina, 268 
Mollusca, 35, 79, 81, 
103, 140, 187, 189, 
278 
Molpadiidae, 251 
Monoceystidae, 34 
Monocystis, 34 
Monogenea, 108 
Monomyaria, 191 
Monopora, 122 
Monothalnia, 13 
Monotus, 81 
Murex, 203 
Musca, 370, 375, 380 
Muscidae, 371, 375 
Mygale, 409, 415 
Myriapoda, 310 
Myrmeleo, 347, 358 
Myrmeleonidae, 347 
Mysis, 285, 286, 289 
Mytilus, 190, 192, 193, 
195 
Myxomycetes, 7, 9 
Myxospongiae, 45 
Myzostomidae, 240 
144, 145, 
NAIDIDAE, 149 
Naidomorpha, 144 
Narcomedusae, 59, 60 
Natantia, 204 
Nauplius, 254, 260, 278, 
279, 286 
Nautilus, 210, 222 
Vebalia, 280, 282 
Vebaliopsis, 280 
Nectocalyces, 59 
Nematocysts, 28, 47, 57, 
59, 89, 122, 206 
Nematoda, 124, 126 
Nematophores, 56 
Nematus, 378 
Nemertines, 79, 90, 115, 
131, 430 
Nemesia, 415 
Neomenia, 196 
Nepa, 363, 421 
Nephelis, 132, 134, 137 
Nepidae, 363 
Nereis, 158 
Neurochord, 148 
Neuroptera, 342 
Neurotus, 379 
Noctiluca, 25 
Noctuina, 353 
Non-calcarea, 36, 41, 43, 
44 
Nothrus, 420 
Notodelphidae, 269 
Notonectidae, 363 
Nucleus, 1, 10 
Nuda, 10 
Nummudlites, 15 
Nyctotherus, 28 
Nymph, 347 
OBISIUM, 402 
Octactiniae, 64, 71, 73 
Octopoda, 211, 223 
Oculina, 68, 71 
Ocythoe, 222 
Odontophore, 140, 190 
Oecodoma, 382 
Oestridae, 371, 374 
Oestrus, 375 
Oligochaeta, 
143, 303 
Onchidium, 208 
Oniscidae, 297, 298 
Onychophora, 300 
Oonops, 415 
Oostegopod, 260 
Opalina, 30 
Opalinopsis, 31 
Opereculum, 155 
Ophiopholis, 135, 233 
Ophiuroidea, 224, 233 
Ophiusidae, 353 
Opilionina, 416 
Opisthobranchiata, 205 
Opsicoetus, 364 
Orbitoides, 15 
Orchestia, 292 
103, 138, 
