34 



[ February, 



female, black beneath, with some spots on the connexivum, and the pygofer, yellow ; 

 saw-case black, ^deagus as in figures I and m. Legs sordid yellow, striped, and 

 spotted with black. Length, 4— 4| mm. 



Weybourne, Norfolk, by sweeping grasses in a swampy marsh 

 near the sea. 



The rarity of this species is probably to be accounted for by the 

 lateness of its appearance ; I found males preponderating in a small 

 series taken on October 18th, 1888, and I took some nearly full-grown 

 nymphs at the same time. This insect has been recorded as occurring 

 on Nymphcea and Potamogeton nutans ; but I think that its occurrence 

 on these plants was due to the habit which it possesses, in common 

 with many other insects living in similar places, of taking to the water 

 when first disturbed, and shortly afterwards returning to the shore ; 

 there were certainly neither water-lilies nor Potamogeton in its Norfolk 

 habitat. 



EXPLANATION OF FIGUKES. 



^DEAGUS OF CiCADULA. 



a. C. metria, side view ; b. do., from above. 



beneath. 



131, Rupert Street, Norwich : 

 November, 1890. 



