290 



INDEX. 



Leucospis, 251 



Libellula, 69, 70, 149, 152, 171 



Light-organs, 161, 185 



Ligia, 167 



Limitation of instinct, 253 



Limpet, 4, 138 



Limulus, 159 



Lithobius, 155 



Lizzia, 132 



Lobster, 90, 91 



Locusts, 62, 99, 106, 111, 149, 176 



Longicorn beetles, 66, 95 



Lucanus, 43, 52 



Lucilia, 177 



Lycosa, 179 



Lyda, 58 



M 



Mammals, 129 



Maxilla;, 25 



Meconema, 102, 105 



Medusa;, 6, 22, 82, 83, 84, 85, 86, 



117 

 Meissner's corpuscles, 7 

 Mololoutha, 52, 58, 67, 68, 148, 152, 



168 

 Mesonotum, 67 

 Metronome, 284 

 Miltogramma, 254 

 MoUusca, 14, 22, 34, 61, 86, 120, 



137, 140 

 Mordella, 148 

 Mosaic vision, 163 

 Mosquito. See Culex 

 Moths. See Lepidoptera 

 Murei, 139 

 Musca, 17, 29, 30, 45, 53, 58, 68, 71, 



110, 113, 148, 153, 165, 172, 174, 



177, 254 

 Mutilla, 69, 70 

 Myriapods, 155, 205 

 Myrmica. See Ants 

 Mysis, 92, 98, 157, 161 



N 



Nautilus, 140 

 Necrophorns, 66, 68 

 Needle cells, 21 

 Nematocera, 151 



Nematocysts, 12 

 Nereis, 12, 135 

 Nesticus, l80 

 Neuroptera, 111, 151 

 Newts, 207 

 Noctua, 73, 243, 282 



o 



Oceanidse, 86 



Ocypoda, 61 



Odynerns, 247 



CEstrus, 148 



Olfactory organs. See Organs of 



smell 

 Omaloplia, 68 

 Onchidium, 14, 131, 143 

 Oniscoidse, 170 

 Ontorchis, 6, 84 

 Organs of hearing, 17, 19, 77, 81, 93, 



109, 114 



of sight, 19, 130, 146 



of smell, 17, 88 



of taste, 17, 19, 21 



of temperature, 6, 10 



of touch, 11, 14, 17, 19, 131 



, problematical, 182 



Origin of organs of sense, 3 

 Orthoptera, 37, 99, 107, 112, 131, 



176 

 Oryctes, 68 

 Osmia, 251 

 Otolithes, 52, 82, 84, 85, 89, 90, 91, 



92 

 , possible origin of, 3 



Pacinian corpuscle, 8 



Pagurus, 51 



Palasmon, 51 



Palinurus, 61 



Palpi, 30, 37, 38, 39, 41, 73 



Paludina, 140 



Pamphila, 184 



Paniscus, 58 



Patella, 138, 140 



Paussus, 65 



Pectens, 61, 141 



Pectunculus, 141 



Pelagia, 86 



