138 SATURNIA ISIS. 



cles are replaced by club-like projections of a third 

 of an inch in length, and of a bright coral red 

 colour. The last segment is furnished with but 

 five tubercles, the central one of which is of the 

 same clavate form as those on the anterior segment, 

 but is of a fine yellow colour. As before stated, 

 they feed on the leaves of the sassafras, spice- wood, 

 and swamp button-wood, and are to be found 

 during most of the autumn months. 



" The silk spun by this species is as fine, and is 

 produced in as great abundance, as that furnished 

 by the Bomhyx mori (or the silk-worm usually 

 reared for manufacturing purposes, and which was 

 originally a native of Asia), but is of a darker 

 colour, and will, it is feared, always present diffi- 

 culties in reeling, from the manner in which part of 

 it is attached to the branch." 



SATURNIA ISIS, Westwood. 



PLATE XIII. 



On first drawing and describing this fine species, we 

 thought that it was quite new, never having seen 

 another specimen except one in the possession of 

 Samuel Stevens, Esq., from which our drawing was 

 made. But we have since learned that a figure 



