PRESIDENT S ADDRESS. XC111. 



The smaller dragon flies also migrate at times. A cloud of 

 some species of the genus Agrion has been observed in Suffolk 

 flying inland, which cast a slight shadow over a field of four 

 acres in passing. 



In La Plata immense flights of ^schtia bonariensis occur, and 

 generally precede one of the violent winds which are common 

 to that district, the dragon flies flying in front of the wind at 

 great speed. 



Like other insects, dragon flies have been taken at great 

 distances from land, e.g., on the P. and O. steamer Victoria 

 when 200 miles from Keeling Island, the nearest land, and 

 900 miles from Australia. 



LEPIDOPTERA. 



From the general attractiveness and the interest attached to 

 their transformation, no Order of insects has been so much 

 studied or collected as that of the Lepidoptera, and hence it is 

 amongst the butterflies and moths (excepting, perhaps, the 

 locusts) that we find the records of migrations most numerous. 



To take first what is nearest and most familiar to us, we in 

 England are indebted to this habit for the not infrequent 

 presence among us of some of our finest and most beautiful 

 species which often come to our shores, but never seem able to 

 settle permanently in our midst. At our last meeting, on 

 February 2ist, I exhibited a fine specimen of Deilephila livornica 

 bred from an egg laid by one of these immigrants taken 'at 

 Ferndale, which is in Dorset, though near Bournemouth, in 

 Dr. Crallan's possession, and also shown by him at the meeting. 

 The year 1904 was one which will be remembered by entomolo- 

 gists as a most fruitful one in that particular species, but it may 

 be assumed almost with certainty that none of the progeny have 

 survived the winter, and we shall have to wait for a fresh 



