266 BRITISH GALLS 



PIG. 



PLATE XXVI 

 Stems of Rvbus plicatus, galled by the fnnglis Coniothyrium Fuckelii. 



PLATE XXVII 



Seed vessels and stem of Omanthe crocata, with galls caused by the 

 presence of the fungus Protomyces macresporus. 



PLATE XXVIII 



Convolvulus arvensis, with the midribs of the leaves much hypertro- 

 phied and distorted through the presence of Eriophyes convolvuli. 



PLATE XXIX 



1. Flowering stem of Hypochaeris radicata, with gall resulting from the 



presence of the larvae oi Aulax hypochaeridis. (J.) 



2. Ditto, much galled and with abortive flower. . {\.) 



3. Ditto, a transverse section, showing the larval cavities. {{.) 



4. Aulax hypochaeridis. (f .) 



5. 6. Stems and leaves of Nepeta hederacea, with galls resulting from the 



presence of the larvae of Aulax gkchomae. (J.) 



7. Section of gall of A . glechomae, showing the larval cells. (\.) 



8. Larva. (J.) 



9. Aulax glechomae. (f.) 



PLATE XXX 



Leaves of Viburnum Lantana, with galls caused by the presence of 

 the larvae of Oligotrophus Solmsii. The lowest leaves show the 

 under surface of the galls, (l.) 



PLATE XXXI 



Leaves and stems of Achillea millefolium, with galls caused by the 

 presence of the larvae of RhopcUomyia millejolii. (}) 



PLATE XXXII 



Radical leaves of Sonchus arvensis, with galls caused by the presence 

 of the larvae of Cystiphora sonchi. ((i) 



