314 Hcrcditu of JfcffiiilsiH in Lepido2)tera 



It is hoperl that the whnle i(nesti(in can be settled during the next 

 few years. 



In conclusion, with regard to most species which have nielanic forms, 

 the evidence is not extensive, bnt the weight of evidence up to the 

 present seems to show that melanism in Lepidoptera frequently follows 

 the Mendelian Law of Heredity, and in most cases is dominant, but in 

 some few species is recessive. 

 ' I wish to record my indebtedness to the various observers mentioned, 

 I'specially Messrs Mansbridge, Prijut, Porritt, J. W. H. Harrison, and 

 Buckley, for their courtesy in correspondence, and for permission to 

 include the data of their respective experiments. 



DESCRIPTION OF PLATE XXVII. 



1 — 12. A Hiphidaays betuUiria. 



1. Light type i , Kent. 



2. Light type ? , Kent. 

 i. Dark type g , Kent. 



4. Dark type ? , Kent. 



5. Litermediate J , Family 11.20. 

 I.i. Intermediate V , Warwickshire. 



7. Intermediate S . 



8. Intermediate ? , Family 12.2. 



9. Intermediate ^ , Family 11.20. 



10. Intermediate 1 , Family 11.20. 



11. Var. douhledayaria i ■ 



12. Var. douhledayivria ? . 



13 — IG. Spilosoma lubricipeda. 



13. Type 6 , Worcestershire. 



14. Var. Yorkshire <f . 



15. Var. Intermediate <s . 



16. Var. radiata ? . 



17 — 19. Boarmia repandaia. 



17. Type i , Devon. 



18. Banded ? , Devon. 



19. Melanic $ , LaucaBhire. 



20 — 22. Acidalia rirtiuhiria. 



20. Light {ctiitteiierariii) j . Hyeres parents. 



21. Dark J, Loudon parents. 



22. Melanic ? . 



23 — 2.5. Aplectii nebutosti. 



23. Type <f . 



24. Var. robsaiii s . 



25. Var. tliompsoni 2 . 



