MEANS OF DEFENCE OF CATERPII.l.ARS. 



187 



and tlien raising its head to the perpendicular position 

 again, it tiuis cfiects one step, and proceeds in the 

 same manner till it reaches the top. 



Other catci pillars, when they are disturbed, employ 

 a dilii^rcnt method of breaking their Tall without 

 spinning a thread, taking advantage, for this purpose, 

 ot' the long hairs which cover their body. Those 

 who have seen a hedge-hog (Erinacetis Etiropaus), 

 when attacked by a dog, roll itself up into a prickly 

 ball, will readily conceive the manccuvre of the cater- 

 pillars to which we allude, it being precisely similar. 



rt, Caterpillar of tiie lij;er-molli l.lr-tia Cnjn). A, ilic sam<'' 

 rolled up for dell-r.ce. r, griih of llic miiseiiin-bcelle. J, lh« 

 same mngnilied. r, tail of tlie saiiip, magnifled. /, f, Its haira 

 jiiagnified. 



