cocoon, long and narrow, the other was still alive in the larva state, I 

 tried to get it to feed up on Hawkweed, but in the course of eight 

 days it died. 



On the 4th of July, 1883, 1 again received four of these larvae from 

 Mr. rietcher, viz. : one 9 mm. long, one 12^ mm. long, very dark red 

 on a dingy green ground, which is seen at the segmental divisions, and 

 in the fine pale rings round the black dots ; another was 19 mm. long 

 slightly tajDering from the third segment to the head, tapering again a 

 little on the twelfth and considerably on the thirteenth segment ; the 

 head, the second and anal segments with their plates just as described 

 above from the specimens I received in 1882, but the colouring of the 

 body of a deepish sober green, with a darker dorsal pulsating line, the 

 blackish-brown dots appearing very small as their circumscribing pale 

 rings have much faded, the front plate was deep olive outlined with 

 blackish-brown ; one entered the earth on the 4th of July, another I 

 watched burrow into the earth on the 5th. 



Mr. Fletcher tells me "that when young the larva is found on the 

 under-side of leaves of the food-plant. When it is bigger it makes a 

 tunnel or gallery under the plant on the soil, so that when the rosette 

 of leaves is removed the larva is left behind. I think that this tunnel 

 reaches into the turf beyond the radius of the leaves, as many a little 

 sod cut round the plant comes away without the larva. 1 found one 

 pupa of odd shape in this gallery." 



" When full grown the larva often eats out the heart of the jDlant 

 and bores down far enough into the root to kill it. While the larva is 

 feeding under the leaves its ravages are conspicuous enough, even while 

 small, as it makes brown marks, which are visible on the upper-side of 

 the plant." 



In confinement, without earth with the plants, its gallery of silk 

 becomes covered with accumulations of " frass." 



Often when the larva attains the last moult we see the dark dingy 

 olive-green variety, with belly rather lighter than the back, the one 

 colour blending with the other, the spiracles round and black, are very 

 minute and situated nearly close below the single row of dots on the 

 side : the pale yellowish margin of skin next the head, in front of the 

 plate on the 2nd segment, is a good and constant character. 



The pupa is generally enclosed in a cocoon, covered with grains of 

 earth, of oval shape, 19 mm. in length, rather loosely held together 

 with but very little silk in the lining of brownish-grey colour, the in- 

 terior of cylindrical form and smooth, 12^ mm. in length, so that the 

 pupa (which is only 10 to 11 mm. long) has plenty of room ; it is rather 



I 



