WILLOW SAWFLY. 149 



noticeable, the Sawflies which laid the eggs may very likely have 

 passed away. But I add a figure of the Gooseberry Sawfly, Nematiis 

 rihesii, magnified, belonging to the same sub-group as N. salicis, as an 

 example of the general appearance of the imagos of this genus. The 

 imago of the N. salicis is to some degree distinguishable by its large 



Nematus eibesii, magnified ; length of body from a quarter to a third of an inch. 



inflated yellow abdomen, and the nerves, blotch, and line below it 

 [stigma and costa) on the front edge of fore wings being black ; the 

 wings are hyaline and yellowish ; length of body half an inch or rather 

 less. For full description see Mr. P. Cameron's work cited p. 148. 



