PllASMIDyE ; WALKING-LEAF. 143 



to look like the lateral twigs ; whilst the absence of motion in 

 the Insect for a long period adds strength to the deception. 

 Others, which possess wings, have still the same general appear- 

 ance ; these organs being laid flat along the back, so as not to 

 extend beyond the body. In others, again, the wings have 

 the form and aspect of withered leaves (Fig. 366) ; whilst the 

 wing-covers are very short. And lastly, there are a few, in 

 which the wing-covers are of a brighter hue, and of larger size, 

 covering in the wings, and giving to the whole animal the 

 appearance of a fresher leaf. These curious insects are for the 

 most part natives of the East Indies, the East Indian Archi- 

 pelago, Australia, and South America. Their larvae differ but 

 little from the perfect insects, except in their colours and in the 

 absence of wings; and there are several species, as we have 

 seen, in which these are never developed. It not unfrequently 

 happens that they lose a limb by violence ; and this is repro- 



FIG. 366. PHYLLIUM SICCIFOLIUM. 



duced, provided the complete growth of the animal has not been 

 attained. The eggs are laid separately, in the usual manner. 

 GG8. The section SALTATORIA consists of numerous species 



