294 THE PLACE OF MIMICRY 



PAGE 



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



tive Resemblance . . . . . . .301 



6. The Hypertely of Brunner von Wattenwyl . . . 302 



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



8. The Value of Brightly-coloured Surfaces Concealed during 



Best 



r. The Gregarious Habit may assist Concealment 



10. Adjustable Protective Resemblance . 



a. Rapid ...... 



b. Slow ....... 



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 



12. The Recent Progressive Darkening of many Species of 



Moths in the Lancashire and Yorkshire District . 308 



13. Dimorphism and Polymorphistn in Procryplic Defence . 310 



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



15. Seasonal Dimorphism in Procryplic Defence . . .310 



16. Syncryptic or Common Protective Resemblance . .312 



B. Anticryptic or Aggressive Resemblance . 



C. Allocryptic or Adventitious Protective (and Aggres 



sive) Resemblance 



303 

 3°4 

 304 

 304 

 3°4 



312 



3i3 



II SEMATIC COLOURS, OR WARNING AND SIGNAL- 

 LING (RECOGNITION) COLOURS ;— APOSEMATIC 

 AND EPISEMATIC CHARACTERS . . . .315 



A. Aposematic or Warning Characters .... 315 



1. Experimental Evidence of Special Protection in Forms 



with Warning Colours . . . . . .316 



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 fr 07H Cryptic to Aposematic Defence . .318 



5. Seasonal Transition from Cryptic to Aposematic Defe7ice, 320 



6. Geographical Transition from Aposematic to Cryptic 



Defe7ice , % 320 



