HISTORY OF ZOOLOGY 



39 



a 



FIG. 12. Grasshopper mimicry, a, Acanthoderus wattacei + . b, Phyllium scytlie 



FIG. 13. Methona psidii, a bad-tasting Heliconiid, copied by theT?iend,LeptaliSGrise. 



(after Wallace.) 



