NOTES ON BRITISH ODONATA, 1918. 118 



NOTES ON BRITISH ODONATA, 1918. 

 By W. J. Lucas, B.A., F.E.S. 



At Marlborough Deeps in the New Forest on April 27th I met 

 with the first dragonfly of the season. It was an Agrionid, and 

 no doubt Pyrrhosoma nymphula, Sulz., though I had not the 

 chance of certainly identifying it. On the previous day E. A. C. 

 Stowell took a single example of this species near Par, in 

 Cornwall, and on May 14th he found quite a number at Par 

 swamp. On June Ist he took a Corduleg aster annulatus, Latr., 

 and both sexes of Calopteryx virgo, Linn., at Lostwithiel in the 

 same county. 



In June, Calopteryx splendens, Har., of both sexes, was taken 

 near Walton-on-Thames, Surrey, and Enallagma cyathigerum, 

 Charp., male, in the Home Park, Hampton Court, Middlesex 

 (A. Parr) ; while Ischnura elegans, Lind., was captured at 

 Hunstanton in Norfolk (G. T. Lyle). 



At the Byfleet Canal, Surrey, dragonflies were numerous on 

 June 16th, those met with being Lihellula depressa, Linn., a few; 

 Cordulia (S7iea, Linn., many, those seen being chiefly males ; C. 

 splendens, numerous; Erythromma naias, Hans., males plentiful; 

 P. nymphula, a fair number; I. elegans, a few; Agrion piilchellum, 

 Lind., one male taken ; Agrion puella, Linn., plentiful ; E. 

 cyathigerum, a fair number ; possibly one or two other species 

 were present, including Brachytron pratense, Miill. (L. C. E. 

 Balcomb). On June 17th a male L. depressa was taken at rest 

 in Prince's Coverts near Oxshott, Surrey (W. J. L.). 



K. J. Morton is able to record a new locality for the northern 

 species, Somatochlora arctica, Zett. Glen Lochay was its southern 

 limit as far as was known, but on June 17th he took a male in 

 Glen Nant, Argyllshire, and soon afterwards J. W. Bowhill, who 

 was with him, took a female, while one or two other males were 

 seen during passing gleams of sunshine. 



For the ' Lancashire and Cheshire Fauna Eecord ' T. A. 

 Coward sent me P. nymphula, two males from Nant-y-Merddyn 

 (Denbighshire), taken June 7th and 10th, and a male E. cyathi- 

 gerum taken at Rostherne, Cheshire, on June 22nd. This last had 

 the distinctive black spot on the second segment of the abdomen 

 concave on the anterior margin. The spot varies considerably 

 in shape, but I believe I had not previously seen one of this form. 

 He told me that he had also taken C. annulatus at Nant-y- 

 Merddyn in June. H. Bendorf took E. cyathigerum on July 22nd 

 at Agecroft, south-east Lancashire, and, at the beginning of 

 August, Mschna grandis, Linn., a female, at Ringley, near 

 Manchester. On August 7th he wrote again saying that after 

 the heavy rain on August 6th he went in the evening to a pond 

 a few minutes distant from Prestwich and found six jE. grandis 

 fully out, two half out, and another which was still a nymph but 



ENTOM. MAY, 1919. L 



