Ischnura. 275 



Date. 



This species begins to appear about the middle of 

 May, and remains on the wing throughout the summer, 

 the earhest record noticed being May 17, and the 

 latest September 12. Quite at the end of the season 

 specimens are often taken with the immatiu'e colouring. 

 It does not follow, however, that these belong to a 

 second brood ; they seem rather to be individuals that 

 have matured later, for in some species of the A vricviidce 

 n}-mphs taken c^uite near to the time when the imagines 

 might be expected to emerge vary very greatly in size, 

 and it is clear that the smaller ones could not possibly 

 disclose the perfect insect till long after their larger 

 brethren. 



Habits. 



/. clcgaus flies low amongst the herbage of sedgy 

 ditches, canals, and ponds. In such situations, unless 

 sought for, it is not easily detected, its coloration 

 being not conspicuous. 



Distribution. 



Throughout the British Isles this species occurs, 

 and though records are not very numerous, yet they 

 are well scattered, and this Dragonfly must be looked 

 upon as one of our common species. Argyllshire : Small 

 form (G. T. Porritt) ; Ledaig and near Dalmally 

 (J. J. F. X. King). Perthshire: (A. M. Rodger). 

 L'Dicashirc : Morecambe ( G. T. Porritt). Cheshire: 

 Chester district, pretty general (J. Arkle). Yorkshire : 

 York, Castle Howard, and Huddersfield (G. T. Porritt). 



T 2 



