254 THE ENTOMOLOGIST. 



managed to pair with an orange -banded variety of the male, and 

 effected other pairings, as enumerated below : — Var. female with 

 speckled var. male ; var. female with orange-banded var. male ; 

 normal female with orange-banded var. male ; normal female with 

 speckled var. male ; var. female with orange-banded var. male ; 

 var. female with speckled var. male ; speckled var. female with 

 orange-banded var. male. Though I secured a plentiful supply 

 of ova from these pairings, I was able only to save about fifty 

 larvae. The others either escaped through the fine meshes of the 

 muslin sleeve in which they had been confined, or were destroyed 

 by young spiders which overran my garden in the early part of the 

 season. 



With this small stock, however, as prunaria is reputed to be 

 a very variable moth, I hope, on a future occasion, to be able to 

 chronicle some new variations of this lepidopteron worthy of 

 special note. 



2, Buckleigh Eoad, Streatham Common, S.W., Sept. 15, 1885. 



AN UNUSUAL APHIS MIGRATION. 

 By John R. S. Clifford. 



Somewhat to my surprise, it appears that as yet no 

 observations have been communicated to the ' Entomologist ' 

 concerning the Aphis migration that took place towards the end 

 of July and at the beginning of August, and which must have 

 been noticed by many naturalists, since it evidently extended 

 over some considerable part of England ; at least I have had 

 reports of it from Surrey and Oxfordshire. The presumption is, 

 therefore, justifiable that it occurred in other counties. Con- 

 cerning Kent and Middlesex I can speak from personal 

 observation. It is to be hoped that notes illustrative of this 

 event may yet be contributed to this and other scientific 

 journals, as we might thereb}^ be helped to a better knowledge 

 of a group of insects that are interesting on account of their 

 peculiar economy, and also their pernicious influence on 

 vegetation, especially on the produce of our gardens, both 

 useful and ornamental. 



Before, however, describing this particular incident, it is 



