428 



INDEX. 



EBR 



communication among bees, 156, 

 313 



I''BRARU, M., his observations 

 J as to the origin of ants' nests, 

 81 

 Eciton, the eye in, 11 

 — drepanoj)hora, their order in 

 marching, 21 



— erratica, soldiers among, 21 ; 

 their covered galleries, 65 



— legianis at play, 29 



— vastator, soldiers among, 21 ; 

 their covered galleries, 65 



Economy of labour among ants, 

 experiments as to, 240, &c. 



Eggs of ants described, 6 ; laid 

 occasionally by worker ants, 35 ; 

 by worker bees and wasps, 36 ; 

 these always produce males, 37 ; 

 as to difference of sex in, 40 ; 

 of aphis, tended by ants, 69 ; 

 and hatched in captivity, 71 



Electric light, experiments on ants 

 with, 200 



Emery's observations on Coloiopsig, 

 20; on Camjjonotus lateralis, i02 



Enemies of ants, 26, 67 



Evolution of colour in flowers, 308 



Experiments, as to the adoption of 

 a queen by ants, 32; as to di- 

 vision of labour among ants, 23, 

 45, 324 ; as to their care of 

 aphis-eggs, 70 ; on Claviger, 90 ; 

 as to the treatment by ants of 

 injured companions, 94, 107 ; 

 with chloroformed ants, 98, 

 108-111; with drowned ants, 

 99 ; with buried ants, 102 ; as 

 to treatment of stranger ants, 

 104, 119, 124, 333; as to mode 

 of recognition, 108 ; with in- 

 toxicated ants, 111-118; as to 

 power of recognition among ants, 

 119, 333, 412 ; and among bees, 

 120 ; with ant-pupa3 removed 

 from nest, 129-147 ; on sister- 

 ants brought up separately, 147- 



FOO 



152 ; as to power of communl 

 cat ion among ants, 1 60-1 81,344- 

 366 ; among bees, 274 ; among 

 wasps, 311, 377; as to percep- 

 tion of colour, 186, 406 ; with 

 coloured solutions, 194 ; with 

 spectnim, 198 ; with the electric 

 light, 201 ; as to ultra-violet rays, 

 200-220, 406 ; with magnesium 

 spark, 207 ; as to sense of hear- 

 ing among ants, 222 ; among 

 bees, 290 ; as to sense of smeU 

 among ants, 233, 258 ; among 

 bees, 288; as to ant-intelligence, 

 237 ; as to economy of labour, 

 241 ; as to ingenuity among 

 ants, 243-246 ; as to their power 

 of finding their way, 250; as 

 to means of tracking, 168; 

 as to sense of direction among 

 ants, 260, 410; among bees, 

 278 ; and among wasps, 321 ; as 

 to guidance of ants by sight, 

 266 ; as to the behaviour of 

 bees iji a strange hive, 281 ; as 

 to their compassion, 286 ; as to 

 their colour sense, 291 ; and 

 their preference of certain 

 colours, 302 ; as to colour sense 

 among wasps, 316 

 Expulsion of ant from nest, 98 

 Eyes of two kinds in ants, 10 ; 

 compound, 182 ; various de- 

 velopments of, 183 



FACETS of the eye in ants, 

 number of, 11 ; described, 182 



Feeding, loss of instinct of, 76, 83, 

 87 



Fertilisation of plants by insects, 

 50, 291 



Fighting among ants, different 

 modes of, 17 



Flowers, their defences against 

 unprofitable insects, 51-55; in- 

 fluence of bees on their develop- 

 ment, 291 ; paucity oi blue, 308 



Food of ants, 25, 63 ; its efliect in 



