308 CJ1AMJ5US TRISTELLUS. 



and here, amongst a great number of the silken 

 galleries, I was glad to find four tenanted ; one gallery- 

 was covered with dry frass, the other three partially 

 protected externally with small particles of moss, 

 some of which was growing in patches at the base of 

 the grass ; each was spun amongst the grass in a 

 vertical position, the lower end rather over half an 

 inch from the earth ; the length of these galleries 

 varied from three-quarters of an inch to one inch and 

 a quarter; their shape was a little inclining to fusi- 

 form, but yet rather irregular in figure, made of strong 

 grey silk, and very smooth within. When removed 

 to a fresh pot of A. flexuosa these larvae fed well for a 

 time, but early in June they deserted these dwellings 

 and constructed little silken-lined tunnels in the light 

 soil amongst the upper parts of the grass roots, and 

 therein, during July, they pupated. The moths 

 appeared from the 1st to the 11th of August. 



The egg of G. tristellus — which, as far as the 

 experience of these two batches enables me to speak,, 

 appears to be deposited free, and not attached by the 

 moth to anything — is in size rather large for that of 

 the moth, of a long elliptical shape, and ribbed 

 longitudinally; when first laid, of a whitish straw- 

 colour, turning in about five days to buff, on the tenth 

 day to light brown, from thence growing gradually to 

 dark brown or dark red, and within two days of 

 hatching, to a dingy purplish tint. In this instance, 

 the hatching continued at intervals from the sixteenth 

 to the nineteenth day. 



When first hatched, the larva is less than the 

 sixteenth of an inch long, of a dingy pink colour, with 

 large black head and plate on the second segment. 

 Not having examined them till the following spring, 

 I can give no account of the intermediate moults, but, 

 towards the end of April in the following year, I found 

 the smallest larva to be three-eighths of an inch, two 

 others about half an inch, and the largest three- 

 quarters of an inch in length ; the ground colour of 



