270 THE INSECT WORLD. 
warty spots, each having a hair of the same colour. They are 
wonderfully lively, the moment they are disturbed taking refuge 
in a rolled leaf, which serves them as a dwelling-place. If they 
are pursued, they let themselves fall by the aid of a thread, 

Fig. 275.—Antithesia salicana. Fig. 276.—Peedisca occultana. Fig. 277.—Argyrolepia 
zeneana. 
and do not re-ascend till they think they can count on repose 
and security. This, and many kindred species, do a great deal 
of damage to our trees. They strip them of their leaves, and 
sometimes give them, during the first days of summer, the sad 

Fig 278 —Sericoris Zinkenana. Fig. 279.—Sarrothripa revayana. 
and melancholy appearance which they present in the middle of 
winter. 
We have just alluded to the tube formed of a rolled leaf, in 
which the caterpillar takes refuge, and in which it lives. This 

Fig. 280.—Cochylis francilana. Fig. 28i.—Choreutes dolosana. 
tube it constructs itself. Réaumur has devoted a magnificent 
‘hapter of his Memoirs to observations on the skill with which 
divers species of caterpillars fold, roll, and bind the leaves of 
plants and trees, especially those of the oak. Let us listen to the 
great observer :—“ If one looks attentively at the leaves of the 
oak tree towards the middle of the spring, many of them will be 
seen to be rolled in different ways. The exterior surface of the 
