1910.] IGl 



and thorax clothed with rather lon^ grey hairs. Head above strongly punctiu'ed, 

 with tempora not distinctly margined posteriorly ; its sides behind the eyes 

 converging strongly and rectilinearly, as viewed from above ( — subgenus 

 Gongylocorsia, Knw. !) ; Middle lobe of mesonotiun very smooth and shining, 

 bisected by a shai-ply-defined deep longitudinal impression ; the side-lobes 

 punctured much as is the liead. Wings clear hyaline, nervures and stigma 

 brown-black, the latter somewhat pale at its extreme base. 



The " unique " J specimen of this beautiful insect was taken by 

 Mr. H. St. J. Donisthorpe while sweeping close to the Queen's Bower, 

 at Brockenhurst on May 28th, 1910, and most kindly presented to 

 myself. I may add that it is in absolutely perfect condition, and that 

 I tender him my most sincere thanks for enriching my collection with 

 this and other rarities, one of which I shall have occasion to mention 

 in a future instalment of my " Help-Notes, &c.," now appearing from 

 time to time in this Magazine. 



Brunswick, Woking : 



June Qth, 1910. 



Agrion armatum, Charp., at Stalham Broad, Norfolk. — As Mr. Balfour 

 Browne could not be persuaded to supply either Mr. K. J. Morton or myself 

 with a specimen of this recent addition to the List of British Odonata, it 

 became necessary for me to -go and collect it myself. A nine days' visit to 

 Norfolk, within easy access of the Broads, at the end of last month (May) 

 gave me the desired opportunity. My first search for the species was on 

 Monday, May 23rd, an ideal day for collecting dragon-flies, calm, with continuous 

 hot sunshine ; and as I understood that Mr. Browne had recorded it as occurring 

 on Sutton Broad only, so far as he knew, I naturally looked for it there, and 

 spent all my time that day in a fruitless quest, for not a ti'ace of it could 

 I find. The next two days were as great a contrast in weather as could well be 

 imagined — absolutely sunless, with a bitterly keen north-east wind, in which 

 searching for dragon-flies was hopeless. The day following, the 26th, was 

 a considerable improvement, warm and fairly sunny, so I decided to try Stalham 

 Broad, which is only separated from Sixtton Broad by a tributary of the river. 

 There I was fortunate enough to come across the special object of my search, 

 and a few nice A. armatum were gracing my setting boards before the day was 

 over. Next day I took several more on the same ground, but it was not until 

 the following morning, Saturday the 28th, when I tried another part of Stalham 

 Broad, that I evidently hit on one of the head-quarters of the species. The 

 weather was by far the best I had had since Monday, and armatum was flying 

 so commonly that before I left I had netted a flne series for my own cabinet, 

 with some additional specimens for my Neru-opterist friends, and yet I perhaps 

 did not captvu-e more than half the specimens I saw. 



In the sunshine the species flies rather quickly, and for the most part just 



