1899] 



PEAR AND CHERRY SAWFLY. 



105 



but almost immediately the slimy exudation begins to form and spread 

 over its whole body, giving the Slug-like appearance from which it 

 takes its name. 



The above notes give, in condensed form, the most noticeable 

 points of the habits and method of attack of the Pear Bawfly. The 

 amount of injury and the appearance of the injured leafage (see p. 102) 

 has been so often described that it is unnecessary to notice it again, 

 and the very important point of the capacity of the larva or Slugworm 

 for throwing off its slimy coat, and thus getting rid of acrid or irritating 

 dressings which may have been thrown on it, is entered on imder the 

 heading of " Methods of Prevention and Remedy" (p. 110). 



1, Cluster of about one hundred cocoons, natural size ; 2. part of cluster in 

 which the larva- have bored into the mortar to form their cocoons; Sand 4, cocoons, 

 much magnified. 



Previously to this, however, I give the following notes regarding 

 attack of this infestation to a Pear tree, first observed about five years 

 ago by Mr. Robert Newstead, Curator of the Grosvenor Museum, 

 Chester, which he Ivindly permits me to make use of, and which I 

 insert in extenso, as they enter on many points of much interest to 

 treat of together, and especially as giving instances of the caterpillars 

 under special circumstances, in some instances forming their cocoons 

 on large roots of the Pear ; and also, in other instances (from lack of 

 room), placing their cocoons so closely together as to form connected 

 clusters of several scores. The figures above are copied, by permission, 

 from photos taken by Mr. Newstead. 



