by 4heo,. Carrerus. 
WARNING COLOURS. 
All the above specimens are remarkable instances of warning colouration. ‘These colours, which are usually yellow and black, bright 
sreen, red, or a striking red brown, serve as danger signals to intending attackers, for they denote some peculiar propensity of the 
subject. or instance—the black and yellow of the Hornet, its dangerous sting ; the banded Snake, that it is venomous ; the Butterflies and 
Caterpillars, that their flesh is harmful as food ; and the Salamanders, that they secrete in their skin a harmful fluid. 
