89 



As Roesel wished to see these larvae 

 cliange, he collected, for several years run- 

 ning, numbers of them in the months of 

 October and November, put them into 

 glasses half rilled with earth, and with, 

 tufts of grass up on them and observed that 

 they dug down directly into the earth, 

 and remained there all the winter through 

 till tlie next year, and part of them 

 till the month of June, in their larva 

 state, and after this they changed into 

 pupae as figured in fig. 24. Except the 

 colour, which was the same light ochre- 

 yellow as in the pupae, there was no 

 more similitude between them, but on 

 the contrary, all the parts of the future 

 chafer were already conspicuous. On 

 the last segment are two short points, 

 which serve the pupa to turn about 

 in its cavern, and I have often seen 

 how quickly it moves and turns itself. 



In the month of August the chafers 

 begin to push off their tender involu- 

 crum, this was done gradually in the 

 space from the 1st to the 20th day of 

 that month j but they still remained an- 



