EASTERN UNITED STATES. 233 



top with a little tubercle in the middle of the hollow, 

 from which springs a bristle ; color light brown. 



After the first moult, which takes place in eight days, 

 the more slender tails are pink-tipped, creased trans- 

 versely, and on the creases fine white tubercles with 

 short bristles. The color is at first greenish yellow, 

 but afterwards changes to pale green. 



Along the middle of the back is a dark green stripe 

 free from tubercles, and on each edge of this is a 

 line of white tubercles, another along the side, and a 

 third along the base ; between the last two are two 

 other white lines. The head is yellowish green, with 

 the surface finely tuberculated. On each vertex is a long, 

 tapering, rough horn, tipped with brown, and marked 

 in front by a reddish stripe, which is extended down the 

 side of the face. 



In nine days it moults a second time, when it is .4 of 

 an inch long, of the same form as before, and yellowish 

 green, with the same tuberculated lines. In fifteen days 

 it moults a third time, when it is .55 of an inch long, of 

 the same form and color as before, but very soon changes 

 to brown and buff. Along the middle of the back is a 

 brown stripe, on each side of which is a reddish buff 

 band, which changes to greenish on the outer side. There 

 is another buff band on the side, through the middle of 

 which runs a brown line. The basal ridge is buff. In 

 a few days the larvae become lethargic, and in this state 

 they pass the winter. Soon after their revival in the 

 spring they moult the fourth time, when they are .62 

 of an inch long, pale green, with a dark stripe along the 

 back, and a yellowish white one just below ; the two lines 



on the side and the basal stripe of the same color. Tails 



20* 



