2 26 



TnEORIi:S OF MIMICRY 



Resemblances in oeneral. Mimicry becomes, as A. R. 

 Wallace expresses it, merely * an exceptional form of 

 protective resemblance '.^ The following classification 

 was suooested by the present writer, with the assistance 

 of I\Tr. Arthur Sidi^wick, in 1890:'-' — 



I. A pat die colours. — Colours re- 

 sembling some part of the environ- 

 ment or the appearance of another 

 species. 



A. Cryptic co- 

 lours. — Protec- 

 tive and Aggres- 

 sive Resem- 

 blances. 



B. Pseudo- 



\ sematic colours. — 



False Warning 



and Signalling 



Colours. 



1. r)\Liyptu 1. J\uH(/iif'o.u- 



colours. — Pro- ;;/(?//< colours. — 



teciive Resem- Protective IMimi- 



blances. cry. 



2. Anticryptic 2. Pseudepise- 

 I colours. — Ag- I malic colours. — 

 gressive Resem- Aggressive Mimi- 

 blances. cry and Alluring 



Coloration. 



II. Sana tic co- 

 lours. — Warning 

 and Signalling 

 Colours. 



I. xi/><>.u /fuilii 

 colours. — Wa r n - 

 ing Colours. 



2. Epi sematic 

 colours. — Recog- 

 nition Markings. 



III. Epi- 

 i^amic colours. 

 — Colours 

 displayed in 

 courtship. 



Thus the facts of Mimicry fit into a broad system 

 which includes many other resemblances in organic 

 nature. The relation between Protective Resemblance 

 (I. A. i) and Protective Miniicry (I. B. i) is as follows : — 

 In the former an animal resembles some object which is 

 o( no interest to its enem)-, and in doing so is concealed ; 

 in the latter an animal resembles an object which is well 

 known and avoided by its enemy, and in doing so becomes 

 conspicuous. Thus Alimicry as interpreted by \l. W. 

 Bates finds its place in I. 13. i, while the resemblance 

 between protected conspicuous forms (sometimes, but, as 

 I think, erroneously, called Mimicry), as interpreted by 

 Fritz Miiller,'* falls into II. i. Such cases only differ 



' Darwinism., London, 1889, p. 26.-,. 



* The Colours f/ Animals, Internat. Sci. Ser., London, 1890, p. 338. 

 ' Kos?nos, May 1879. p. 100. translated by Mcldola in Proc. Ent. Soc, 

 Loud., 1879. P- XX. 



