48 



BlilTlSH OAK GALLS. 



Except when otherwise specified, the galls may be 

 found on either Quercus pechinculata and Q. sessiliflora. 



The word " gall " is held to mean the actual growth 

 surrounding the cavity containing the larva, whether 

 it be thin, as that of Sjxitliegaster cdhipes ; or thick as 

 that of Dryophanta Scutellaria ; or the tissues which 

 surround two or more larval cells, such as Teras 

 terminalis or Aphilofhrix radicis. In three species, 

 Andricus curvator, A.inflator, and Aphilothrix fecunda- 

 tvix, it is necessary to remember that the actual larval 

 chamber is concealed within a non-adherent case, or 

 by leaf scales, which ma}^ be quite correctly also 

 termed the o-all. 



All the specimens illustrated bv photographs (except 

 Plates II, XXXII, LX, div. 'B, and LXI), were 

 gathered by the author witliin a radius of ten miles of 

 Hastings. 



5. I iS. 



1. 2. 



m 



3S. 



'• 2. 3. 



Fig. 4. — lum., on., and inch scale. 



