

447 



RIO 



231 ; on robbery among 

 $, 286 



Bight, bow far ants are guided by, 

 . 268, 266, 270 

 . > given by ants, 168 

 Slave-holding, structural changes 

 induced by, 82; degradation 

 caused by, 89 

 Slave- making anta, 18 ; expedition 



of, 81 

 Slavery among ants, origin of, 79 ; 



degrading tendency of, 82-89 

 Smell of Myrmfdna possibly pro- 

 tective, 17 ; on recognition 

 among anta by, 127 ; sense of. 

 among ants, 283 ; the probable 

 means of recognition amon^r 

 bees, 281 ; sense of, keen among 

 bees, 288 



Snake killed by Driver ants, 64 

 Soldiers among anta, 20 ; those of 

 .->& do not fight, 22; their 



orig:: 



8*tt*optit fugax, the eye in, 11; 

 the enemy of its hosts, 78 



Solomon on the foresight of the 

 ant, 59, 60 



Sound, apparent insensibility of 

 anta to, 222 ; possible existence 

 of, beyond human auditory 

 range, 223, 233 ; how produced 

 by Manila, 229; apparent in- 

 sensibility of bees to, 290 



Specialisation of form in flowers 

 correlated with colour, 308 



im, experiments as to per- 

 ct- prion of, by anta, 198 



S their intelligence in es- 

 caping the Ecitons, 66 ; mimick- 

 ing anta, 66 



!es of ant, position of, 1 2. 1 4 



Stritanma Woodicardii, the eye in, 

 11; found exclusively in nests 

 rtnica, 78 



^cope-like organs in antenna 

 of ant, 228 



t^tin.u' in ants, possible correlation 

 of. with form of knot, 13 ; pro- 

 bable common origin of, in ant, 



bees, and wasps, 14 ; atrophied 

 iition of , in Formica, 15; the 

 loss of, fatal to bees, 283 



Stores, made by anta, 59 



Strangers, behaviour of ants to* 

 wards, 104, 109, 119,333 



Stridulating apparatus in Mutilla, 

 .' ; in ants, I 



Stonmyyltignathiit Hubert, its mode 

 of slave-making, 84 



tettacrut, the eye in, 11; slave- 

 holders in spite of their [ 

 ness, 84 ; theirdcpradatinj. 



Sulphate of quinine, experiment 

 with, as to ant vision, 216 



Surgical use of ant heads in Bra- 

 zil, 96 



Sykea, Mr., quoted as to seed- 

 collecting ants, 60 



TAME wnsp, behaviour of a, 316 

 Ta/nmutta, length of period of 



larval life in, 7 

 erratiemm, the eye in, 11; their 



agility, 24 ; Hetariut in nests 



of, 77 

 Teazle, possible uses of leaf-cup 



in, 52 

 Trtramorium oa-tjntvm, the eye in, 



1 1 ; feigns death as a defence, 



17; alleged greediness of, '.'7; 



enslaved by Strong yltynathH*, 



84; entire dependence of Au.r- 



gatct upon, 85 



Texas, harvesting ants in, 61 

 TMatophila anyulata in anta' nests, 



77 



Thorax of ant described, 12 

 Tibia of Gryllut, sense organ in, 



231 ; of LariHi, 232; of Loc*t~ 



Timuynathui tublterit, only 



workers of. known, 87 iwte 

 Tracks of anta illustrated, 261-257 

 Tuning-forks, experiments with, 



M 



Tunnels formed by anta, 26 

 Tyndall, Professor, experiment 



