DRAGONFLY SEASON OF 1899. 141 



last year. Mr. C. W. Colthrup found one dead at Folkestone on 

 Oct. 3rd. In addition to the discovery of .E. jiincea at Storno- 

 way, in Lewis, by Mr. H. S. Fremlin, Mr. Briggs and myself 

 found it rather common on Aug. 21st at a large pond on Exmoor, 

 in Somerset. 



Calopteryx splendens and C. virgo have been reported from 

 Moor Park, near Farnham (E. B. Bishop) ; C. virgo from Putten- 

 ham Common, Surrey (E. B. Bishop), and North Devon (C. A. 

 Briggs) ; Lestes spousa, Chobham Common (E. Vincent) ; E. 

 naias, Virginia Water and Chobham Common, Surrey (E. Vin- 

 cent) ; IscJinura elegans, Exmoor (W. J. L.) ; Agrion pulchellum, 

 Broads near Lowestoft (J. Prest) ; and E. cyathigerum, Keswick 

 (E. B. Bishop), and Exmoor (W. J. L.). 



Pyrrhosoma tenellum was captured in June in a new locality — 

 in Sussex, near Liphook — and it occurred as usual in numerous 

 localities in the New Forest, where also Agrion mercuriale was 

 found in good numbers. In Eichmond Park an aberration of 

 I. elegans was taken with two small distal blue spots on the 

 dorsal surface of the seventh segment of the abdomen. 



Some nymphs of C. splendens* dredged from the Byfleet Canal 

 on March 12th, were so very small that they could not possibly 

 have been ready to emerge at their proper time that season ; and 

 the same must be said of a tiny nymph of Gomphus vulgatissimus, 

 taken from a stream in the New Forest on June 4th. We must 

 therefore assume that these two species are, or may be, more 

 than one year in reaching maturity. Empty nymph-cases of the 

 latter dragonfly found in the New Forest were coated with mud, 

 and in all cases were on the grassy bank of the stream, not on 

 rushes. Possibly their legs, which are well adapted for burrow- 

 ing, are not suitable for climbing. 



On April 17th an emergence of a female P. nymphula, which 

 commenced about 9.40 a.m., was watched. The "rest" before 

 the extremity of the abdomen was withdrawn lasted about twenty 

 minutes; the head was not thrown backwards. The wings were 

 of full size about an hour before the body was. Another female 

 that emerged on April 22nd rested in the same manner as did 

 the former. 



On May 11th two males of E. cyathigerum emerged from the 

 nymph-case, and the identity of the nymph was by this means 

 established. 



About 7.35 a.m. on May 14th a Cordidia cenea was noticed 

 partly out of its nymph-case, and then in its "resting position," 

 with head and thorax thrown backwards. At 8 o'clock it bent 

 itself upwards, and drew out the rest of its abdomen, showing 

 that it was a female. An hour later its wings were of full size, 

 and dull grey in colour. The lengthening of the body took place 



* This and the other nymphs referred to are fully described in my 

 * British Dragonflies,' and in some cases figured. 



