t;8 



GENERAL PRINCIPLES OF ZOOLOGY. 



Fie. 13. Grasshopper mimicry, a, Acanthoderus Wallace; ? . b, Pkyllii<i>i Scythed, 



FIG. 13. Methane fsidii, a bad-tasting Heliconid^ copied by the Pierid, Leptalis orist, 



(After Wallace.) 



