PLATE 129. 



A. The fruit of Prunus insititia Linn. 



(Three-fourths nat. size.) 

 Galled by 



Exoascus insititiae Kerner. 



Fig. I. The first symptoms of swelling. 

 „ 2. The intermediate stage. 

 „ 3. Full growth. 



„ 4. Sections showing stoneless cavity in centre. 

 See also plate 126. 

 The illustration is of specimens gathered at Guestling, near 

 Hastings, by the author. 



B. A rhizome of Potentilla reptans Linn. 



(Nearly nat. size.) 

 Galled by 



Xestophanes potentillse Cam. 



This very fine specimen contained twenty-eight aggregations 

 of larval cells, with an average of eight cells in each, giving a 

 total of 224 larvffi in the rhizome. See also plate 13. 



The illustration is of a specimen gathered at Battle by the 

 author. 



