210 THE ENTOMOLOGIST. 



wang and Tang-chung-how ; and presented by J. de la Touche, 

 Esq., to the British Museum). 



This is the second representative of the genus, which I 

 described in 1890 from a species collected in Burma. From 

 that species, T. binghami, it differs completely by the opaque 

 and differently coloured tegmina and wings. 



MIGRATIONS OF DRAGONFLIES. 

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



Such a powerful appearance have some of the larger dragon- 

 flies, and so considerable is their wing-expanse, that we are not 

 surprised to hear of their making migrations to a great distance. 

 The British dragonfly in which this propensity seems most 

 strongly developed is undoubtedly Libellula quadrimaculata. 

 Many flights of this insect, sometimes in enormous numbers, 

 have been recorded, and it would seem that one or more flights 

 of the same dragonfly have to be noted as having taken place 

 during the early part of the present season. 



Mr. H. Stocks, of Weybridge, a very careful observer, sends 

 me the following communication : — " At Margate, on the 10th of 

 June, I observed vast numbers of dragonflies flying about the 

 cliffs. Do you think they were part of the swarm that visited 

 the Continent some days previously ? I much regret being 

 unable to catch any specimens. They were of large size, with 

 thick bodies of a dark brown colour, with wings a shade lighter, 

 and different from any I have usually seen. I do not think they 

 were bred near, as there are no rivers or ponds in the neighbour- 

 hood. I do not know much of the district, but their appearance 

 was evidently uncommon, from the remarks one heard about 

 them. By the end of the week they disappeared — at least, I did 

 not see any more." On enquiry, Mr. Stocks tells me:— "The 

 day was very warm, with a nice gentle breeze. I am not quite 

 certain, but I think the wind was south-east, and I am under the 

 impression there were more dragonflies in the evening than in 

 the morning." There seems little doubt that the dragonflies 

 were Libellula quadrimaculata, and that they formed part of the 

 same or a similar swarm to that seen at Antwerp, and noticed in 

 a very general way without a name to the insect in several of the 

 daily papers just before Mr. Stocks' observation. 



Writing to Mr. South on June 19th, Mr. G. Bolam, of Berwick, 

 asked for the name of a dragonfly {Libellula quadrhnaculata) , of 

 which he enclosed a specimen taken by a friend, and of which he 

 said, " It was observed arriving upon the coast here on Sunday 

 afternoon (presumably June 17th) in hundreds." He states that 



