124 



THE ENTOMOLOGIST. 



sparsamer Behaarung oder ganz kahl . . . die Oberseite 

 ist fein radial gestreift." Callimome sodalis was bred from 

 these galls by Schlechtendal in March and April of the 

 second year. — E. A. Fitch. 



ISOCOLUS SCABIOS^ : A CYNIPIDEOUS GALL-MAKER 

 NEW TO BRITAIN. 



By Edward A. Fitch. 



IsOCOLUS SCABIOS^. 



When Dr. Girand described this species he had but 

 Hartig's arrangement to follow ; this he did faithfully, 

 and in consequence this gall-fly was described by him as 

 Diastrophus scabiosce. Hartig's classification was in many 

 respects a very natural one ; but the generic distinctions were 

 made to rest on very superficial and unsatisfactory characters. 

 The arrangement of the Ci/?iipid(B has since been elaborated 

 by Dr. Forster ; however, I must say, I have not been able to 

 grasp his synopsis at present, but the divisions must, I am 

 afraid, always be very difficult and involved, the insects 

 themselves having a most marked resemblance both in 

 pattern and structure. This refers to psenidous and inqiii- 

 linous genera alike ; but amongst the productions of the 

 gall-makers we have some very natural allies, which have 

 served, and probably will continue to do so, both in the 

 differentiation of species and erection of genera. Forster 

 seems altogether to have ignored the life-histories ; but 



