INDEX. 



105 



Seasonal dimorphism 

 Sea squirts ... 

 Segestria aenoculata 

 Selection, sexual ... 

 Self-coloured flowers 

 Sense organs of Butterflies 

 Sertularidos 



Sexual colours 



selection 



dimorphism 



Shell, Structure of 



Shore Crab... 



Simple variation in Butterflies 



Siphonophora 



Smallpox 



Snakes, patterns of 

 Sollas, Prof., on Sponges 



Soles 



Sparassus smaragdulus 



Species, origin of 



Sphceronectes 



Sphingidce ... 



Spiders, structure and colour of 



Spiracles of larvae 



Spondylus ... 



Sponges 



Spongida ... ... 



Spongocyclia 



Spots and S tripes 



Stephanomia amphitridis ... 

 Struggle for existence 



Sun-birds 



Sus vittatua... 



Sutton, Mr. Bland, on Herpes 

 Swallow-tailed Butterflies 

 Syncoryne pulchella 

 Systems of colouration ... 



Teeth and Hair, correlation of 

 Thomisus cinereus ... 

 floricolens 



PAGE 



... 70 



... 35 



... 83 



... 5 



,.. 28 



... 30 



... 63 



... 4 



5 



... 70 



. . 85 



4 



,.. 77 



,.. 63 



.. 39 



... 89 



... 58 



,.. 88 



... 82 



... 1 



,.. 63 



45, 69 

 ... 82 

 ,.. 22 

 ... 86 

 ... 57 

 .. 57 

 ,.. 57 

 ,.. 39 

 ... 63 

 ... 2 

 ... 90 



46, 94 

 ... 40 

 ... 68 

 ... 62 

 ... 51 



... 94 



... 82 

 82 



Thomisua luctuosus . . . 

 trux 



PAGE 

 .. 84 

 . 82 

 2 



17,92 

 .. 69 

 .. 33 

 90, 92 

 53 



Thrush, increase of 



Tiger 



Moths 



Tipula ... ... ... 



Toucans 



Transparency and colour... 



Trigonia 86 



Tubipora musica 54 



Tubularida... ... ... ... 59 



Tylor, A., on Specific change ... 10 



Vanessa Antiopa 76 



atalanta 29,43,69 



urticce 77 



Variation in insects . .. . .. 70 



law of 2 



simple, in Butterflies ... 77 



Velella 52, 65 



Vertebrata, colouration of ... 88 



Viverridos ... ... ... ... 94 



Wallace, A. E., on sexual selec- 

 tion ...5, 6, 14, 15 



on colour ... ... 29 



on abnormal struc- 

 tures 94 



Warning colours 4 



Wasps 84 



Weir, J. Jenner, on variation in 



insects ... ... ... ... 78 



Weismann, Dr., on Caterpillars... 81 



Wing of Butterfly, typical ... 70 



patterns of 76 



Woodpecker 91 



Yellow Archangel... 



96 



Zebra 92 



Zygcena 69 



