294 THE PLACE OF MIMICRY 



PAGE 



5. The All- Importance of Instinct in bringing about Protec- 



tive Resemblance . . . -. .301 



6. The Hypertely of B runner von Wattemvyl . . .302 



7. Hours during which the Struggle for Life is most Severe 303 



8. The Vahte of Brightly-coloured Surfaces Concealed during 



Rest 303 



r. The Gregarious Habit may assist Concealment . . 304 



10. Adjustable Protective Resemblance . ~ * '"".*. 304 



a. Rapid . i^ >' *. *> V '.-<.' "' . . . 304 



b. Slow 304 



1 1. Coincidence between the Colours of Organisms and those 



of their Peculiar Environments may be probably 

 Caused by the Local Operation of Natural Selection , 307 

 i -. The Recent Progressive Darkening of many Species of 



Moths in the Lancashire and Yorkshire District . 308 



13. Dimorphism and Polymorphism in Procryptic Defence . 310 



14. Seasonal Changes in the Individual . . . .310 



15. Seasonal Dimorphism in Procryptic Defence . . .310 



1 6. Syncryptic or Common Protective Resemblance . . 312 



B. ANTICRYPTIC OR AGGRESSIVE RESEMBLANCE. ,','' 3 12 



C. ALLOCRYPTIC OR ADVENTITIOUS PROTECTIVE (AND AGGRES- 



SIVE) RESEMBLANCE . . .. . . ' .. ' . 313 



II SEMATIC COLOURS, OR WARNING AND SIGNAL- 

 LING (RECOGNITION) COLOURS ; APOSEMATJC 

 AND EPISEMATIC CHARACTERS . . . .315 



A. APOSEMATIC OR WARNING CHARACTERS . . . -315 



1. Experimental Evidence of Special Protection in Forms 



with Warning Colours . . ..,-,. v .-,< </*./ / fT*/ '. 3'6 



2. Species with Warning Colours depend for their Existence 



upon the Co-Existence of Palatable Species '*, ^ . 317 



3. Erroneous Assumption that Warning Colours imply Com- 



plete Immunity from Attack .. . : -*- , .317 



4. Transition from Cryptic to Aposematic Defence . .318 



5. Seasonal Transition from Cryptic to Aposematic Defence. 320 



6. Geographical Transition from Aposematic to Cryptic 



Defence ......... 320 



