446 



INDEX. 



POI 



Poison ejected by Formica rufa, 15 



Polistes, robbery among, 286 ; P. 

 gallica, a specimen of, kept for 

 nine months, 315 



Polyergus rufescens, the eye in, 11 ; 

 its mode of combat, 18 ; indi- 

 vidual courage of, 27 ; males 

 produced from eggs laid by 

 workers among, 39, 45 ; greatly 

 dependent on its slaves, 80, 83 ; 

 slave-making expedition of, de- 

 scribed, 81 ; degrading effect of 

 slave-holding on, 89 ; imprisoned 

 friends and strangers equally 

 neglected, 105 ; power of com- 

 munication among, 158, 180 



Polyg&num, am.pMbiwm, glandular 

 hairs absent from specimens 

 growing in water, 56 



Ponera contracta, the eye in, 11 



Poneridce, one of the three families 

 of ants, 1 ; form of knot in, 13 ; 

 stridulating apparatus in, 230 



Primulaceee, evolution of colour 

 in, 309 



Protective mimicry, 66 



Pupae of ants, 7 ; experimented on 

 as to power of recognition 

 among ants, 129 



Python said to hare been de- 

 stroyed by the Driver ants, 64 



QUEEN ants, longevity of, 9, 

 41 ; their wings, 12 ; several 

 in a nest, 19 ; reluctance of ants 

 to adopt a new, 32 ; never pro- 

 duced from workers' eggs, 36 ; 

 seldom produced in captivity, 

 40 ; treatment of a dead, 108 

 Queen bees, limited nature of de- 

 votion of subjects to, 287 



-f>ANUNCULACEJE, correla- 

 -"' tion of colour with speciali- 

 sation of form in, 308 

 Recognition of friends by ants, 

 experiments on, 108, &c., 119, 



SIE 



&c. ; after long separation, 123, 

 233, 333 ; means of, 125 ; among 

 bees, 126 ; experiments as to, 

 with pupae, 129-1 47 ; as to sister 

 ants brought up separately, 147 ; 

 proved to be communal, not per- 

 sonal, 152 



Kelations, behaviour of ants to, 93 



Retrogression of organs : of sting, 

 14 ; of wings, 15 ; of eyes, 75 



Roads made by ants, 25 



Robbery among bees, 285 



Rufescent ants on a slave-making 

 expedition, 81 



ST. FARGEAU, Lepeletier de, 

 on the origin of ants' nests, 

 31 ; on the benevolence of ants, 

 94 ; as to hearing among insects, 

 221 



Saiiba ant, see (Ecodoma cephalotes 



Sauvages, Abb6 Boisier de, on the 

 connection between ants and 

 aphides, 68 



Savage, Rev. T. S., ' On the Habits 

 of Driver Ants,' quoted, 20, 63, 

 64 



Scavengers, some ant-guests may 

 serve as, 75 



Scent, power among ants of track- 

 ing by, 124, 171 ; experiments 

 with different kinds of, 233 ; 

 importance of, to ants, 258 



Schenk, Anergates discovered by, 

 86 



Secretion of aphis retained till re- 

 quired by ants, 69 ; of Claviger 

 and Dinarda as food for ants, 

 75, 76 



Seeds of violet collected by ants, 

 26 ; stored by ants, 60 ; and 

 prevented from sprouting, 61 



Senses of ants, 182 ; organs of, 

 226, 232 



Sentinels among bees, 288 



Sex of eggs determined by treat- 

 ment, 40, 41 



Siebold, von, on sense-organs in 



