84 L September, 



individuals had increased their length to thi'ee-quarters of an inch, and 

 were stouter in proportion, their lines still more distinct, the sub- 

 dorsal white stripe relieved now by a specially dark one beneath. By 

 the 1st of July, they had moulted for the last time, and in the course of 

 three or four more days attained their utmost dimensions, becoming 

 full-fed, and retiring to earth from July 6th to 10th. The first moth 

 came forth on April 25th, 1877, simultaneously with about a dozen of 

 QScopliora pseiido-spretella, both species continuing to appear at in- 

 tervals, and the last specimen of cinctaria on May 12th, in all, seven 

 males and three females, a wonderful result, as only two of the pupae 

 had been found and devoured by such a number of those insatiable 

 pests, which appeared to have fed chiefly on the remains of the birch 

 leaves amongst which they had spun themselves up. The cinctaria 

 seemed not to have made any appreciable cocoons, as the pupa skins 

 were found at the bottom of the pot, at a depth of four inches, ap- 

 parently loose in the coarse friable soil. 



The full-grown larva is one and a half inch in length, moderately 

 slender, nearly of uniform bulk when viewed from above, but, when 

 viewed sideways, is seen to taper very slightly from the tenth segment, 

 both towards the head and also behind ; the head is rather wider near 

 the movith than at its junction Avith the second segment ; the skin is 

 soft and smooth, its general ground colour a light and tender green, 

 the head the lightest, and rather pinkish at the mouth, the ocelli black, 

 on the second segment the lines to be mentioned are all very faint, the 

 whole of the back appears much lighter than the sides and belly, from 

 the number and closeness of pale longitudinal lines, which are relieved 

 by fine thread-like edges only of the green ground ; the dorsal line is 

 rather bluish-green, darkest near each segmental division, and having 

 an exceedingly fine, ragged, greenish-white, central thread, close on 

 either side of it comes a ragged-edged, yellowish- white, or yelloAvish 

 line, followed closely by another, less light or fainter, and again by a 

 wider, ragged-edged, whitish, sub-dorsal line, these are each defined 

 by a fine thread of green edging, and are relieved below by a wide line 

 of rather darker bluish-green, having a very fine, ragged, paler thread 

 running through it ; below, again follows a faint greenish-white thread, 

 edged with a darker thread of bluish-green, followed by a broad space 

 of the light green ground, only faintly marked with the slightest pos- 

 sible trace of a pair of paler threads along the spiracles, which are 

 small, roundish, oval, and flesh coloured, delicately outlined with black, 

 the skin below them a little puckered, showing yellowish in some 

 places ; the belly is of a more bluish-green, having a ventral paler 



