264 



THE PHYSIOLOGY OF INSECT SENSES 



Humidity, 156-61 



definition of, 156-7 

 Hydrous, 118, 127 



piceuSy 154, 155 



triangularis, 169 

 Hygroreceptors, 157-61 



Isiaisabella, 210,211,212 



Johnston's organ, 55, 59-62, 64, 78 



of Culicidae, 103-5 



in swimming, 69, 74 

 Joint receptors, 36-39 



Laccophilus, 127, 130, 155 

 Lasius niger, 138 

 Latheticus oryzae, 120 

 Lepidoptera (see also Vanessa, Pro- 

 denia, Bombyx, Pieris, Antheraea, 

 Lucania, Danaus, Isia, Galleria), 

 78, 79, 81, 82, 84, 94-99 



stretch receptors, 46, 47 



tactile hair, 23 



tympanic organ, 56 

 Leptinotarsa, 145 



decemlineata, 139 

 Lethocerus, 74 



americanus, 63 

 Libellula luctuosa, 207 



vibrans, 207 

 Limulus, 148, 171, 173, 176 

 Liogryllus, 107 



campestris, 89 

 Locusta, 57, 61, 89, 90, 91, 93, 94, 105, 

 204 



migratoria migratorioides, 85, 90, 

 157, 158, 207 

 Lucania, 98 

 Lucilia, 170, 174 



caeser, 139, 148, 181 



cuprina, 159 



sericata, 159 



Machilis, 106, 162 



Macropanesthia rhinocerus, 7 



Macrotorixa, 68 



Malacosoma, 118 



Male clasper, mechano receptors on, 



29, 33 

 Mantis, 36-39, 175 

 Mantis religiosa, 175 

 Mechanoreception, 26-76 

 Melanoplus, 34, 35, 169, 172 



bivittatus, 158, 159, 207 



different ialis, 113, 168, 181 



Melanoplus, femur-rubrum, 168 

 Melolontha, 14, 15, 107, 109 



vulgaris, 16 

 Membrane potential, 4 

 Modalities, contact chemoreception, 

 153-5 

 odour, 125-6 

 Monohammus confusor, 55 

 Mosquitoes (see also Aedes, Culex, 

 Anopheles), Johnston's organ, 59, 

 60, 103, 105 

 Motor system, 7, 8 

 Musca, 163, 164, 179, 180 



domestica, 116, 118, 127, 159, 160, 

 163, 164, 168, 169, 181 

 Muscina, 64, 65 

 stabulans, 64 

 Muscle receptor, crustacean, 32, 44, 



49 

 Muscle spindle, frog, 32, 44 

 My r mica, 88 

 rubida, 138 

 rubra, 138 

 Mysidium, 191 



Naucoris, 68, 69 

 Necrophorus, 118 



tomentosus, 113 



vespilloides, 113 

 Neodiprion, 158 



americanus banksianae, 158 



lecontei, 158 

 Nepa, 70, 71, 72 

 Nervous system, economy in, 7-9 



motor, 7 

 Neurilemma, 11, 14 

 Neuron, Type T, 14, 16, 17 



Type II, 14, 15, 16 

 Noctua c-nigrum, 96 

 Non-electrolytes, stimulation by 131-6 

 Notonecta, 68, 69, 183, 190 



Ocelli, 207-10 

 Odour, 116-26 



qualities, 125-6 

 Olfaction, 116-26 



acuity, 116-21 



adequate stimuli, 121-2 



mechanism, 122-5 



thresholds, 117, 118, 119 

 Olfactory pit, 119 

 Olfactory receptors, 113-15 

 Ommatidium, 13, 162-5 



appositional, 13, 163 



superpositional, 13 



