ZOOLOGY, 



LIST OF SCOTTISH OYNIPID31 THAT POEM GALLS ON OAKS. 



{Extracted from " The Fauna of Scotland, Hymenoptera" Tart II.) 



By PETER CAMERON. 



[As the subject is one to which special attention has been paid in 

 the Scottish Naturalist in past years, we have extracted Mr. 

 Cameron's list of the Cynipidse that form oak galls as being the 

 latest and most complete summary of the subject by the ento- 

 mologist best acquainted with the British gall-flies and their galls. 

 The nomenclature is in accordance with Dr. Adler's conclusions in 

 regard to dimorphism among gall-flies and their galls, and the names 

 adopted are those sanctioned by Dr. Mayr of Vienna, so well-known 

 for his labours in this field of study. The same name is given to 

 both forms of the dimorphic species, being determined by priority, 

 to whichever of the two forms it was first applied. It is, however, 

 convenient to denote the galls by differential names ; hence, the 

 name formerly regarded as specific, but now sunk, is given in 

 brackets in each case for the gall which it was used to indicate. 

 Mr. Cameron does not indicate in his list whether he has obtained 

 examples from Scotland of both forms of each of the dimorphic 

 species, or whether any are inserted because one of the forms has 

 been found, and the other may be assumed to exist in the same 

 localities. — Ed. Scottish Naturalist.] 



i. Neuroterus baccarum L., " currant gall " on leaves and 

 catkins. 

 (N. lenticularts, Oliv., "spangle gall" on leaves.) Abundant 

 everywhere. 

 2. N. fumipennis, Htg., on leaves. 



{Spathegaster tricolor, Htg., on leaves.) Local, but wide- 

 spread. 



