APHIDID.E. 



313 



white fluffy matter, but this, unfortunately, rather spoils the colour. 

 The general colour is yellowish - green, with darkish legs and 



antenna? 



Fig. 288 is from a photograph of the leaves of copper beech ; and 

 there is only one species in the genus which confines itself exclusively 

 to the beech. 



In the older writings of ' The Transactions of the (Royal) Scottish 



Fig. 2SS. Foliage of copper beech (under side) covered with Phyllaphis fagi. 



Arboricultural Society ' several accounts of this insect are given under 

 the name of Cliermes fagi. 



This species is particularly harmful around the London area. 



Genu* Stomaphis. 



As this genus, according to Buckton, contains only a single species, 

 namely, S. quercus, which is said to be comparatively rare in England, 

 it may be well, for the advantage of students, to simply give the 

 following generic characters according to Buckton viz. : 



"Head and eyes small. Antennae slender, moderately long, six- 

 jointed, third joint the longest, the sixth as long as, or longer than, 



