6
THE DRAGONFLIES OF EPPING FOREST.
K. J. Morton, of Edinburgh, who determined it to be S. vulga-
tum, "beyond all question," and courteously furnished us with
material for the comparative study of the genitalia, the real test
of distinctness, in the two allied species. The previous British
records for S. vulgatum, for which we are indebted to Mr. Lucas,
relate to single male specimens, all taken south of the Thames,
viz., by Mr. C. A. Briggs, Bookham Common (1891); Mr. W. J.
Lucas, Richmond Park (September 11th, 1898); and Mr. A. H.
Hamm, Torquay (August 15th, 1899).
(16) S. sanguineum was met with for the first time since
1903. It occurred very sparingly, only two males being taken,
one on September 4th, and the other on the 8th; both speci-
mens were flying over ponds some miles to the north of our old
locality for the species.
(17) S. scoticum.—On September 8th we detected at a pond
near Loughton two or three specimens of this species, not
hitherto seen by us in the forest, flying over the horsetails
(Equisetum), which partly filled the pond. After much time
spent in waiting for an opportunity, a male was at length
secured, and we were thus enabled to add the species to our
Epping Forest list. A solitary specimen was seen at another
pond as late as October 14th, but it could not be taken.
AEschna mixta was probably seen on one or two occasions in
October, but a capture was not effected. It is somewhat remark-
able that, notwithstanding the unusual abundance of Ischnura
elegans, not a single female of the orange variety (rufescens) was
met with.
33, Maude Terrace, Walthamstow, Essex :
November 13th, 1906.