9 



side. On the first six segments following the head there is a 

 bluish tubercle armed with several black spines on each side 

 of the dorsal line, and on the remaining segments these 

 tubercles are dark crimson red. In the middle of the tenth 

 and eleventh segments there is a smaller red tubercle notched 

 at the top. The whole surface of the body is somewhat 

 hairy, but along each side the hairs are long and form quite 

 dense clusters. 



"The pupa (Fig. 4) is from three-fourths of an inch to an 

 inch in length, and varies in color from chocolate to reddish 

 brown. On each side, at the base of the wing-covers, is a 

 dark reddish brown, oval, velvety spot. The wing-cases are 

 quite broad and reach to the posterior third of the fifth seg- 

 ment. The antennai cases are strongly curved, and are quite 

 wide in the middle. There are a few yellowish brown hairs 



Fig. 4. 



on the face and head, also on the first five segments, 

 arranged in Ijroken circles or clusters, which are in longi- 

 tudinal and transverse rows. The cremaster or spine at the 

 posterior end is flattened, rounded at the outer end, grooved 

 longitudinally^ and has twelve or more minute hooks at the 

 end. The moths emerge from the pup?e from the first to 

 the middle of July." 



The foregoing was prepared by Professor Fernald from 

 knowledge acquired largely from European sources. Obser- 

 vation in this country shows some slight variation in dates of 

 transformation, size of insect in the various stages, etc. 



