BOMBYCIDJE, OR SILK-WORM TRIBE. 



181 



are grey or fawn colour ; and many of the larger species have 

 the wings ornamented with eye-like spots (Fig. 506). This 



FIG. 506. EMPEROR MOTH. 



trihe contains the largest species of Lepidoptera. The Saturnia 

 pavonia major, found in France, has been seen to attain the 

 breadth of five inches across the wings; and the Saturnia pavonia 

 minor, or Emperor Moth of this country (Fig. 506), attains the 

 breadth of 3^ inches. Many of this genus are remarkable for the 



FIG. 507 SATURNIA PROMKTHKA. 



contrivances they adopt for security in the Chrysalis state ; and 

 among the most so is the Saturnia promethea (Fig. 507), an 



