NOTES ON ODONATA. 13 



small male, much resembling the British form, with hyaline 

 wings, the nervures not incrassate and the basal normal, and 

 the postpetiolar angles not pale ; the tarsi are white, not flavous, 

 marked. Taken at Hiogo by Lewis. 



Thus, Protichneumon laminatorius, Fab. = IcJinenmon cogna- 

 torius, Smith, excl. var. iii. 

 Protichneumon laminatorius. Fab. = Ichneumon flavi- 



tards, Smith. 

 Stenichneumon cognatorius. Smith = Ichneumon cogna- 

 torius, Sm., var. iii. only. 



British Museum (Nat. Hist.) : Dec. 10th, 1909. 



NOTES ON ODONATA OBSEEVED IN GREAT BRITAIN 

 DURING THE SUMMER OF 1908. 



By E. R. Speyer, F.E.S. 



The summer of 1908 will always remain pre-eminent in my 

 notes and observations on British Odonata, for not only have 

 twenty-four species been obtained, but two of great interest and 

 rarity have been taken, and five others, hitherto unrecorded by 

 me, have been met with in comparatively large numbers. The 

 discovery of a wonderful locality in Sussex accounted for no fewer 

 than sixteen species in two days at the beginning of August, 

 including one which has up till this year been found in Scotland 

 only — as far as the British Isles are concerned. 



The following is a list of the Odonata recorded, with notes on 

 their duration of flight and any peculiarities in their bionomics 

 which chanced to come under my observation : — 



Sympetrum striolatam, Charp. — First taken on July 28th in 

 a very immature condition at the Aldenham Reservoir, in Hert- 

 fordshire. At the beginning of August it was common round 

 Tunbridge Wells, and on August 16th round Shenley. At the 

 end of August it was exceptionally plentiful near Tunbridge 

 Wells, and I then took specimens no larger than S. sanguineum. 

 One male was taken in a gravel- pit near Shenley on September 

 15th, and this specimen was worn. 



S. fonscolombii, Selys. — On June 24th I had the pleasure 

 of capturing two males of this beautiful species in a rather 

 worn condition near Shenley, Herts. I did not observe it again 

 until July 27th, when I netted a female at the Aldenham 

 Reservoir. 



There seems little doubt that my specimens are migratory, 

 and possibly belonged to a swarm which visited Switzerland this 

 year. There have most probably been two movements, the 

 second of which would account for the female I took in July. 



