INDEX. 



251 



Metamorphoses of Mantida\ hatching of 

 larva, time of, 2 1 



number of larvaj yielded by a single 

 capsule, 22 



nymph state compared with sub- 

 apterous or apterous adults, 24 



time occupied in metamorphoses, 

 21 

 " Metamorphoses," the, or " Golden 



Ass," 163 

 iMcfkone audcrssoiii, 137, 140 

 Metitra elongata, a most interesting 

 architect, 20S 



strange female of, 2 1 7 



striking cases of, 208, 209 215 

 Microcoitnim retiiien'c, eggs of, 144 ; 

 metamorphoses, 141, 145 



curious habits, 150 



music, 149, 150 

 Migration of Butterflies, 179; of Day- 

 flying Moths, 201 ; of Lepidoptera 

 generally, 241 



of Locusts, icg ; laws governing, 1 1 1 ; 

 phenomenon explained by excessive 

 multiplication, 111,113; other causes, 

 remote, immediate, 113; remarkable 

 manifestations of instinct attend, 

 locusts take direction of predecessors, 

 trial flights, locusts wait for change 

 when wind unfavourable, 115 ; dis- 

 appearance of locusts from a spot 

 invaded apparently inexplicable, 

 116; distance to which swarms 

 may migrate, 123; length of single 

 flight, 123 ; facts in proof of power 

 of prolonged flight, 124-126 

 Migratory, most species of Acridiidx' not, 

 106 



disposition, not caused by anatomical 

 differences, 108 



locusts, habits and natural history, 109; 

 ravaging power of, 109 ; huge size 

 of swarms, 109 ; famine and pesti- 

 lence result of a swarm, 1 10 



Migratory species, exist in countries with- 

 out giving rise to swarms, 108 ; pene- 

 trate to our shores, 108 

 species of Acridiid^e ascertained to be, 

 of the Old World, 107 ;. of the New 

 World, 107 

 Mimetic resemblance of Phyllium, 67, 



68 

 Mimicry of Phasmidte, end gained by, 66 

 is purely defensive, 66 

 perhaps no other group in form and 

 colour so generally imitative, 67 

 Morphida;, 177 

 Murray, on Phyllium, 56, 58, 74 



on the eggs of Phyllium scythe in 

 Royal Botanic Garden, Edinburgh, 



54 

 Music of AcridiidK, 88 



of Locustid?e, how produced, 147, 149 

 Musical organs of Locustick-e, situation, 

 structure, 147 

 found usually only in male, 147 



N 



Nervous system, in Acridiida% 87, 88 



the " brain," 87 

 Nomadic in habit, that Death's Head 

 Moth is, 239 



O 



Oedipodides, 107, 126, 132, 136, 137 

 Eremobiens, 137 

 includes most of the species of migratory 



locusts of the Old World, 107, 136 

 winged, striking cases of colour differ- 

 ence, is correlative with locality, 136 

 Oikttuus kirbii, female imago of, 217 

 Orange river, attempted crossing of, by 

 " Yoetgangers," 121 



