274 



FOKEST ENTOMOLOGY. 



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

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

 antennae. 



Fig. 259 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 (Eoyal) Scottish 



Fig. 259.— Foliage of copper beech (inulcr side) covered with Pliyllaphis fagi. 



Arboricultural Society ' several accounts of tliis insect are given under 

 the name of Chermes fagi. 



This species is particularly harmful around the London area. 



Gemis Stomaphis. 



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

 namely, S. qtiercus, 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 Euckton — viz. : 



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

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



