Agrion. 281 



form of the female which resembles somewhat closely 

 the female of A. piiclla has the blue spots reduced to 

 mere circlets. The shape of the prothorax will in such 

 cases serve to distinguish the two species, which seem 

 to be closely related. 



Nymph. 



On one occasion the author bred an imago of this 

 species, but could not make out any clear points of 

 distinction between the nymph-case and that of A. pnella. 

 Perhaps had he known previous to emergence to what 

 species the nymph belonged, this might have been 

 possible. 



Date. 



Earl}' in May this insect appears on the wing in 

 Surre}% and it has been recorded as abundant in the 

 middle of July in Cambridgeshire. There is little doubt 

 that, like its congeners, it extends into August. 



Habits. 



In its haunts and manner of flight it seems to 

 resemble its congener, A. piiclla, the male of which 

 also, and of E. cynthigcntin, it closely resembles in 

 appearance. 



Distribution. 



Judging by the records and notices of its occurrence, 

 this Dragonfly does not appear to be so common as is 

 generally supposed. The author has met with it but 

 in one district, and there only in comparatively small 

 numbers. Records are: Argj'ils/iire : (J. Mackay, 

 "Young Naturalist," vol. viii., p. 180). Yorkshire : 



