VADE MllCllM. I I 



position, as in tlioHc wlioso »i<le« are Ktrijjcd, the Hi)iradcH are 

 soniptimes planted in it, or Junt above it, or lietwcen two. 

 liepidopterous liirvie have either ten, ei){ht, six, or two pro- 

 legs, seldom indeed more and never fewer. Of these, witli 

 few exceptions, two are attached to the last or anal, and the 

 rest, when present, to one or more of the sixth, seventli, 

 eifjhth, and nintli sc)?nient-s of the body : none are ever found 

 on the fourth, fifth, tenth, or eleventli sejfments. 



Many larvai of Lcpiiluptt'rit unite in some common work 

 for the benefit of the community, and continue together 

 while their united labours are beneficial to them ; but when 

 tliey reacli a certain period of life, they disperse and become 

 solitary. Of this kind are the Cateq)iUars of a little IJutterfly 

 (Melitwa Cinnici), wliich devour the narrow-leaved jjlantain. 

 The families of these, usually amounting; to about a hundred, 

 unite to form a pyramidal silken tent, containinf; several 

 apartments, which is pitched over some of the plants that 

 constitute their food, and shelters them both from the sun 

 and the rain. When they have consinncd tlie provisions 

 which it covers, they constnict a new one over other roots 

 of this plant ; and sometimes four or five of these encamp- 

 ments may be seen within a foot or two of each otlier. 

 Against \viuter they weave and erect a stronger habitation 

 of aromider form, not divided l)y any partitions, in which 

 they lie heaped one upon another, each being rolled up ; 

 about April they separate and coutinuc solitary till they 

 assume the pn/m.* 



The larvce of the cabbage Butterfly, (I'nnlla flriissira-), 

 when about to assume the pu/M state, connnunly fixes itself 

 to the under side of the coping of a wall, or some similar 

 projection ; but the ends of the slender threatl which 



* Intiuductiuii lu £iUunialugy, vul. ii. p. ii\). 



