276 DRAGONFLIES OF NORTH AMERICA 
Montgomery (’25, p. 383) writes: 
Williamson and I observed a pair ovipositing in a stem of Scirpus fluviatilis. 
The pair moved down the stem depositing eggs at short intervals. The female 
was observed to straighten out her abdomen after each egg was inserted in the 
inaequalis eurinus congener unguiculatus ) sigma 
tissue of the plant. After the pair had moved down the stem several inches in 
this manner, they walked up the stem about a foot and began the process over 
again. This move was carried out in perfect unison;.... A section of the plant 
containing eggs was brought to the laboratory and examined under the micro- 
scope. The eggs were inserted at intervals of 114-4 mm. and pointed downward 
at an angle of about 45 with the surface of the stem. Most of them were inclined 
either slightly to the right or to the left, from the plane passing through the line 
of punctures and the center of the stem. 

262. Lestes unguiculatus Hagen 
Hag. ’61, p. 70: Mtk. Cat. p. 40: Davis 13, p. 14: Whed. 14, p. 91: Garm. 717, 
p. 494 and ’27, p. 105. 
Length 36 mm. Expanse 40 mm. N.S. and N. J. to N. D. and Calif. 
Labrum yellowish; the face blackish above. Front of thorax brassy black, 
yellow on carinae with an isolated stripe, abbreviated both above and below, 
bordering the humeral suture in front. Sides of thorax yellow with a very broad 
stripe covering and extending rearward from the third lateral suture, and 
widened upward. Before its lower end there are some black spots about the leg 
bases. Legs black, lined with yellow externally on femora and tibiae. Abdomen 
greenish black with yellow side margins on all middle segments: apical segments 
becoming darker: appendages black at tip. 
This species is oftenest seen sitting on the vertical stems of bul- 
rushes, from whence it makes sudden dashes at passing Diptera. It 
eats them, sitting. 
(Whedon ’14, p. 91) says “It is an inhabitant of pond and small lake 
regions and is very seldom seen about streams..... It seems clear 
that great numbers of this species migrate from pond to pond or lake ° 
to lake during the breeding period; ovipositing for a day or so at each 
stopping place. Incomputable myriads.” 
