The Colours of Animals. 109 



of these 48 are marked with black or grey, 15 

 brown or brownish, two yellowish-green, one bluish- 

 grey, one striped with yellow and black, and one 

 reddish-grey. There are two yellowish-green hairy 

 species, which might be regarded as exceptions : 

 one, that of the Five-spotted Burnet-moth, is 

 marked with black and yellow, and the other* 

 is variable in colour, some specimens of this cater- 

 pillar being orange. This last species is also marked 

 with black, so that neither of these species can be 

 considered of the green colour which serves as a 

 protection. Thus, among the larger caterpillars, 

 there is not a single hairy species of the usual 

 green colour. On the other hand, there are 50 

 species with black or fcjackish caterpillars, and of 

 these 48 are hairy or downy. 



9. In 10 of our larger moths the caterpillars are 

 more or less marked with red. Of these, three are 

 hairy, one is an internal feeder, four have reddish 

 lines, which probably serve for protection by simu- 

 lating lines of shadow, and one, the Euphorbia 

 Hawk-moth, is inedible. The last, the striped 

 Hawk-moth, is rare, and I have never seen the 

 caterpillar ; but to judge from figures, the reddish 

 line and spots would render it, not more, but less 

 conspicuous amongst the low herbage which it 

 frequents. 



10. Seven species only of our larger moths have 

 any blue ; of these, four are hairy, the other three are 



* Nola albulalis. 



