64 ON PLANTS AND INSECTS. [LECT. 



not liairy or spiny ; but, as it has red spots and blue 

 tubercles, and' the neck is furnished with a yellow 

 forked appendage, it is probably sufficiently protected. 

 The larva of Papilio machaon is also marked with 

 black, and provided with strongly-scented tentacles, 

 which probably serve as a protection. 



Again, there are sixteen brown species, and of these, 

 seven are hairy or spiny. 



Bed and blue are rare colors among caterpillars. 

 Omitting minute dots, we have six species, more or 

 less marked with red or orange, viz., A. aglaia, V. 

 antiopa, N. lucina, C. alsus, P. cratcegi and P. 

 machaon. Of these, two are spiny, two hairy, and 

 one protected by scent-emitting tentacles. The orange 

 medio-dorsal line of C. alsus is not very conspicuous, 

 and has been omitted in some descriptions. Blue is 

 even rarer than red ; in fact, none of our butterfly 

 larvae can be said to exhibit this color. 



Now, let us turn to the moths. Of these caterpillars, 

 the Sphingidce, Cocliopidce, Procridce, Zygwnidce, 

 Nolidce, Lithosidce, Euclielidve, Chelonidce, Liparidce, 

 Bombycidce, Drepanulce and Pseudo-Bombyces are 

 tabulatedthese groups comprising nearly all our larger 

 species. The HepialidcB, Zeuzeridce and Sesidce have 

 been omitted, because these larvae are all internal or 

 subterranean feeders, and are devoid of any striking 

 color. This leaves 122 species, out of which sixty- 

 eight are hairy or downy ; and of these, forty-eight are 

 marked with black or grey ; fifteen brown or brownish, 

 two yellowish-green, one bluish-grey, one striped with 

 yellow and black, and one reddish-grey. Of the two 

 yellowish-green hairy species, which might be regarded 



