THE STATE ENTOMOLOGIST. 



77 



curls round like a dog's tail, as at Figure 52, c. As the worm grows 

 older it changes to a reddish-brown, and by the third moult it entirely 

 loses the caudal horn. 



When full grown, it measures nearly four inches in length, and 

 when crawling, appears as at Figure 52, a. It crawls by a series of 

 sudden jerks, and will often fling its head savagely from side to side 

 when alarmed. Dr. Morris* describes the mature larva as being 

 green, with six side patches; but though I have happened across 

 many specimens of this worm during the last seven years, I never 

 once found one that was green after the third moult ; nor do I believe 

 that there are ever any more than five full-sized yellow spol s each side, 

 even in the young individuals. The specimen from which the above 

 figure was made, occurred in 1S67, at Hermann, Missouri, in Mr. Geo. 

 Husmann's vineyard. The back was pinkish, inclining to flesh-color; 

 the sides gradually became darker and darker, and the five patches 

 on segments 6 — 10 inclusive, were cream-yellow with a black annula- 

 tion, and shaped as in the figure. On segments 2, 3, 4, 5 and 6, were 

 numerous small black dots, but on each of the following five seg- 

 ments there were but two such dots. A pale longitudinal line ran 

 above the yellow patches, and the head and first joint were uniiormly 

 dull reddish-brown. 



The most common general color of the full-prown worm is a rich 

 velvety vinous-brown. When at rest, it draws back the fore part of 

 the body, and retracts the head and first two joints into the third (see 

 Fig. 52, J), and in this motionless position it no doubt manages to 



[Fig. 53.] 



escape from the clutches of many a hungry insectivorous bird. Br. 

 Morris, copying perhaps after Harris, erroneously states that the 

 three anterior joints, together with the head, are retracted into the 

 fourth, and Mr. J. A. Lintnerf makes the same false assertion. It is 



♦Synopsis of N. A. Lepidoptera, p. 178. 

 |Proc. Ent. Soc. Phil., Ill, p. 659. 



