GENERAL PRINCIPLES OF ZOOLOGY. 



a 



FIG. 12. Grasshopper mimicry, #, Acantkodertts Wallace: . 6, Phyllium Scythe ?, 



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



(After Wallace > 



