Aulax hieracii. 



When situated at the summit of the stem this gall is not 

 conspicuous, being somewhat screened from view by the leaves 

 which cluster around and above it. Some leaves also grow out 

 from its surface. The swellings occur on any part of the stem 

 and on the roots, but the top of the stem is where they arc 

 most frequently seen. Generally they are the same colour as 

 the stem, and, like it, thickly clothed with long, silky, greyish 

 hairs ; but examples may be found where they are suffused with 

 pink or red and very attractive and pretty. The leaves are not 

 affected in shape or size by the presence of the swelling ; 

 they spring from the stem below it and above it, as well as 

 from all parts of its surface. When past maturity the hairs fall 

 off and the surface becomes glabrous, hard, and of a dull brown 

 colour. The growth of the interior, in all its stages, much 

 resembles that of A. hypochcBridis. The larvae and pupa; also 

 are not easily observable until approaching maturity ; when, 

 however, the gall reaches that condition many larval cells will 

 be found within the tissues. The larvse pupate within the cells, 

 remaining there during the winter secure from enemies. In 

 the spring the imagines eat their way out, leaving small circular 

 holes as evidences of their departure. 



The illustration is of specimens gathered at Hastings by 

 the author. 



