76 GRAMMAlt or ENTOMOLOGY. 



distance, as if to avoid giving any cause of alarm 

 to any new comers. 



243. After a period of nearly two years, its 

 full growth being attained, it retires further below 

 the sand, spins a silken cocoon, and changes into 

 a chrysalis, in which state it remains about three 

 weeks, after which time it emerges a perfect insect. 



