2 PK0CEIS GLOBTJLARLE. 



them both embedded in its substance, each appearing 

 about the size of a small flea in a semi-transparent 

 spot between the upper and under skin of the leaf, 

 and these spots, when afterwards vacated, became 

 clear blotches on the surface. The larvse on emerging 

 to the light were seen to have grown a little, and soon 

 made their way into a fresh piece of similar leaf, 

 which began to show several such blotches where the 

 parenchyma was eaten out. 



On the 25th of July one came out of the leaf, and 

 the next day the other, when a fresh leaf was provided ; 

 but neither would attack it, and they sat still on the 

 old one until the 3rd and 4th of August, when, after 

 moulting, they entered fresh leaves, which continued 

 to be supplied to them in the box every two or three 

 days. Their second moult occurred after they had left 

 the leaves and sat still for nine or ten days, on the 

 13th and 14th of August, when, after an interval of 

 rest, they again mined into the fresh leaves making 

 numerous clear spots on their surfaces, but only for 

 about three or four days, as they were out of their 

 mines again on the 18th, and were spinning little mats 

 of silk, on which they fixed themselves to wait for 

 their third moult which happened on the 23rd to 

 27th of the month. 



By the 3rd of September, the one more advanced in 

 growth than the other had laid itself up on a silken 

 mat, spun on the upper surface of the midrib of a leaf 

 whose sides swelling up made a desirable sheltered 

 situation to be fixed in, while its companion at this 

 time was to be seen in the middle of a comparatively 

 large mined blister, from which, as from the very first, 

 the black "frass " continued to be extruded a day or 

 two longer. The former accomplished its fourth moult 

 September 12th, the latter on the 14th; the first, after 

 a three days' rest from what seemed an exhausting 

 operation, again mined into the leaves, and after an 

 interval its companion also, both growing a little, 

 while making large blister-like mines , 



