EXPLANATION OF PLATE C. 

 Fig. 1. PSEUDOCOCCUS ULICIS. (Pages 32 and 41.) 



Common in a few localities, but very local. It is 

 apparently immune from birds, but much subject to the 

 attacks of small Hymenopterous parasites /r//r// flimri- 

 sacs are massed together as shown in the three large 

 branches of the food-plant. When isolated I have 

 found them almost immune. Note the resemblance of 

 the latter to bird-droppings. 



Fig. 2. APTEKOCOCCUS FRAXINI. (Page 41.) 



This species somewhat resembles Grypiococcus fagi 

 (see PL A, fig. 2), but the ovisacs of the females are 

 smaller and never massed together as in the latter. It 

 is given here as a second example of a British Coccid 

 apparently immune from the attacks of both birds in id 

 insects. 



