THE CANADIAN HORTICULTURIST. 



an hour's time the entire brood of grubs have emerged. With their 

 hind extremities still remaining in the openings through which their 

 bodies have escaped, they at once commence to build about themselves 

 small, firm, snow-white cocoons, which, standing on end, are usually 

 so abundant as almost to cover the entire body. 

 This wonderful and curious change in the JOB 

 appearance of the worm is completed in al)Out 

 two or three hours. Fig. 4 represents one of Fig. 4. 



the larva thus infested with its attendant crop of the cocoons of the 

 parasite. After so many active creatures have escaped from its body, 

 the larva, as might be expected, is much reduced in size, and so weak- 

 ened that it invariably dies. From the shape and color of the para- 

 sitic cocoons, they are sometimes thought to be tite eggs of the cater- 

 pillar, and the very thing that should be preserved and cherished is 

 destroyed, thus showing the importance of correct information on these 

 points, so that all may be able to distinguish friends from foes among 

 the insect tribes. A very large proportion of these larvse are thus 

 annually destroyed by this friendly parasite. 



The few caterpillars which escape all the perils to which they are 

 exposed, when full grown descend from the vines and loosely draw 

 together a few fragments of leaves, bind them with silken threads, and 



within these rude enclosures change 

 to chrysalids ; often about or near 

 the base of the vises on which they 

 have fed. In this state they appear 

 as represented in figure 5. 

 Fig. 5. The chrysalis is of a pale brown 



color, dotted with black and with a row of prominent oval black spots. 



along each side. 



'a 



The perfect moth, 

 which in due time bursts 

 the bonds of this death- 

 like sleep, appears in a 

 beautiful garb of green. 

 Its wings, (see figure 6,) 

 when fully expanded, 

 measure about two and 



Fig. 6. 



