AESCHNA 147 
Mr. Walker (’12) describes oviposition of this species from several 
careful observations: 
The insect when first seen was clinging to the blade of a bur-reed (Spar- 
ganium) close to the surface of the water with about half the abdomen immersed 
(see initial figure page 00). She was watched for about 5 minutes at the end of 
which she suddenly flew away. During this time the end of the abdomen was 
thrust against the stem every 2 or 3 seconds and was gradually lowered until 
wholly under water. Soon after this depth was reached she flew away. 
I then examined the reed and found the punctures . . . . were confined to the 
2 narrow surfaces of the 3 cornered reed and the great majority were on one 
surface. They tended to be grouped in oblique rows, although the arrangement 
is by no means regular. They were found to lie a little beneath the surface and 
very obliquely placed, occupying more nearly a vertical position than a horizontal 
one. The pointed anterior ends were in all cases outermost. 
On the following day another ovipositing female of the same species was 
observed at closer range, in fact I was almost directly above the insect while 
watching her. She was supported on a collection of dead floating reeds among a 
thick growth of living ones and was thrusting the ovipositor, seemingly at 
random, into any piece of reed within reach. She did not remain more than a 
minute or so, but the lever-like thrusts of the ovipositor could be seen distinctly 
when the abdomen was turned sideways. In making these thrusts the terminal 
abdominal segment served as a fulcrum. 
105. Aeschna juncea Linnaeus 
Linne. 1758, p. 544: Mtk. Cat. p.111: Wlsn.’09, pp. 656, 665: Walk. ’12, p. 83: 
Howe ’19, p. 46: 728, p. 128. 
Syn: ocellata Mueller., rustica Zetterstedt, picta Charpentier, 
caucasica Kolenati, propingua Scud. 
Length 55 mm. Expanse 92 mm. N. F. and N. H. to Alaska and Col. 
A stout medium sized species. Face yellowish with a heavy dark line on the 
fronto-clypeal suture; anteclypeus brownish with a yellowish upper margin. 
Ss S— 
juncea subarctica 

Labrum yellow bordered with black anteclypeus dark brown. Lateral thoracic 
pale stripes wide the first pair narrowed slightly above and the second pair 
narrowed below. Legs black, femora paler basally. Wings hyaline, costa 
and stigma brown. 
Walker (’12) says ‘‘... . it flies over the open marshes and shallow 
reed-grown waters which border the river..... The weather was 
