NOTES ON THE DRAGONFLY SEASON OF 1912. 77 



It has already been indicated that there is at present no evidence 

 available to support the view that the latter is the same as 

 Klapalek's venosa. Klapalek, however, has clearly denned the 

 insect that he meant, and I follow the course of reinstating the 

 name Chloroperla venosa into the British list, although such a 

 course in the circumstances is not very satisfactory. 



Explanation of Plate VI. — Fig. 1. — Appendage of eighth ventral 

 segment of Chloroperla venosa. Fig. 2. — Appendage of eighth ventral 

 segment of C. grammatica. Fig. 3. — C. venosa (imago). Fig. 4. — 

 C. grammatica (imago). For the photographs of the whole insects I am 

 indebted to Mr. Lucas, who has made the very best of rather unsatisfactory 

 subjects. 



13, Blackford Road, Edinburgh : December, 1912. 



NOTES ON THE DRAGONFLY SEASON OF 1912. 



By F. W. & H. Campion. 



(Plate VII.) 



Although reports of dragonflies being on the wing reached 

 us well before the end of April, the first imago which we saw 

 alive in 1912 was a rather immature male of Pyrrhosoma nym- 

 phula, taken at the Black Pond, Surrey, by Mr. Norman D. Riley 

 on the 28th of that month. 



Dr. F. F. Laidlaw informs us that he saw several males and 

 females of Calopteryx virgo in North Devon before the end of 

 April. Mr. G. Meade- Waldo was kind enough to give us a female 

 from Hever, Kent (May 27th), and a pair (male and female) 

 from Dartmeet, South Devon, dated vi-vii, 1912, all taken by 

 himself. Calopteryx splendens was, as usual, common near 

 Huntingdon, and specimens were taken on June 19th and 21st. 

 Dr. Laidlaw writes that the species was also abundant at Uff- 

 culme, Devon, in June and July. 



On June 27th we again met with Lestes dryas at Ramsey, 

 Hunts, in ditches filled with a species of Carex (apparently 

 C. riparia). By that date only a very few specimens had 

 reached the adult condition, and most of them were still quite 

 teneral. Mr. E. A. Waterhouse re-visited the old dryas locality 

 near Hanwell, Middlesex, after an interval of a few years, and 

 found that since his last visit it had been entirely spoiled from 

 an entomological point of view. 



A male of Platycnemis pennipcs was taken at Hartford, 

 Hunts, on June 19th, and Dr. Laidlaw reports the capture of 

 two males at Uffculme during July. Ischnura elegans var. female 

 infuscans occurred at Hartford, near Huntingdon, on June 19th. 

 Agrion pulchellum was in good condition at Byfleet, Surrey, on 



