lyo Secojid Report on Ecoiioiiiic Zoo/ogv. 



in two little hooks. The pupa is sometimes found in rouj^jh chinks in 

 elm bark as high as six feet above the ground. The pupal stage lasts 

 all the winter and gives rise to the moth in May and June. 



They are never suilficiently common to do any damage to the 

 foliage of the trees upon which the larva* live. Ash is an uncommon 

 food-plant. 



The Felted Beech Coccus. 



{Ci'i/pfocorciis faf/i, Burens[)rung. )* 



Specimens of this pest have been sent from Derwent Hill, Stamford 

 Bridge, Yorkshire. 



It is a pest which may spread with great rapidity, the insects 

 being readily 1)lown about by the wind. 



A suggestion is made that it woidd be advisable to have the 

 trees sprayed with strong paraffin emulsion or caustic alkali wash. 

 It appears from the specimen sent that the smaller boughs are 

 attacked as well as the main trunk, so that it is necessary to spray 

 the whole tree. 



An account dealing more fully with this very destructive and 

 rapidly increasing scale is appended. 



This Beech Coccus has been greatly on tlie increase in recent 

 years, and is causing great damage to beech trees in many parts of 

 the county. It is as altnndant in Xorthumberland as in Surrey, and 

 in all parts it seems to ])e sooner or later fatal to the trees. Owing 

 to the whiteness of the ovisacs it is a very conspicuous pest, the sacs 

 uniting and forming white felted areas, often covering the whole 

 trunk of large trees, making them look as if whitewashed. Many 

 ol" the finest beech trees in Surrey have been destroyed by this pest ; 

 the bark peels off and the tree gradually dies unless remedies are 

 adopted. Besides Xorthumberland and Durham, it is found as recorded 

 above in Yorkshire, and Mr. Xewstead records it in Cheshii-e and the 

 Forest of Dean. 



Abroad it is common near I'rague, in Bohemia. 



The larva"" hatch in Septeml)er. Those sent from Yorksliire this 

 autumn were hatched by iVugust 28th, and ke[it on coming out until 

 September 4th. 



Many of these larvae never see light, as they Avorlv their way 

 under the old felted sacs and there set up nn indepen<lent existence. 

 They plunge their beaks into the bark and form a white wool over 



* Foi' full infoiiualion ridr !Mr. Newstond's '•piitisli Cocciclrf," vol. ii. p. 21"), 

 (Bay Society, 1903). 



