RESEMBLANCES AMONG ANIMALS. 63 
following original observation :—“I myself have more 
than once mistaken Cilix compressa, a little white and 
grey moth, for a piece of bird’s dung dropped upon a 
leaf, and vice versa the dung for the moth. Bryophila 
Glandifera and Perla are the very image of the mortar 
walls on which they rest; and only this summer, in 
Switzerland, I amused myself for some time in watch- 
ing a moth, probably Larentia tripunctaria, fluttering 
about quite close to me, and then alighting on a wall of 
the stone of the district which it so exactly matched as 
to be quite invisible a couple of yards off.” There are 
probably hosts of these resemblances which have not: 
been observed, owing to the difficulty of finding many 
of the species in their stations of natural repose. Ca- 
terpillars are also similarly protected. Many exactly 
resemble in tint the leaves they feed upon; others are 
like little brown twigs, and many are so strangely 
marked or humped, that when motionless they can 
hardly be taken to be living creatures at all. Mr. 
Andrew Murray has remarked how closely the larva of 
the peacock moth (Saturnia pavonia-minor) harmonizes 
in its ground colour with that of the young buds of 
heather on which it feeds, and that the pink spots with 
which it is decorated correspond with the flowers and 
flower-buds of the same plant. 
The whole order of Orthoptera, grasshoppers, locusts, 
crickets, &c., are protected by their colours harmoniz- 
ing with that of the vegetation or the soil on which 
they live, and in no other group have we such strik- 
ing examples of special resemblance. Most of the 
