278 DRAGONFLIES OF NORTH AMERICA 
It darts aside and dodges with the utmost agility, aided by side strokes 
of the broad gills. It undergoes extensive color changes with age and 
with ecdysis. Its food seems to be mainly the larger entomostraca and 
mayfly nymphs. 
266. Lestes disjunctus Selys 
Selys ’62, p. 302: Mtk. Cat. p. 37: Garm ’17, p. 482 and ’27, p. 98. 
Length 34 mm. Expanse 40 mm. N. S. and N. C. to Wis. and Calif. 
This is a small blackish species with greenish face and greenish stripes upon 
the thorax. Front of thorax black with carina narrowly green and a broader 
greenish humeral stripe. Sides black becoming pruinose below with age, with 
an oblique ‘‘?’”’ in green upon the middle. Legs yellowish with blackish stripes 
| | forcipatus ‘uncatus 
vidua_ disjunctus rectangularis 
and with black lines on sides of tibiae and tarsi. Abdomen blackish with the 
sides of the middle segments greenish, the pale color extending upward on the 
extreme base of each of these segments. Apical segments blackish becoming 
pruinose with age. Appendages black-tipped with a few whitish apical and 
basal hairs. 

267. Lestes rectangularis Say 
Say ’39, p. 34: Mtk. Cat. p. 38: Garm. 717, p. 489 and ’27, p. 103. 
Length 49 mm. Expanse 49 mm. Me. and N. C. to N. D. 
A rather elongate, slender species. The labrum is green, fringed -with long 
bristling hairs. The thorax is black in front with carinae yellow and an ante- 
humeral stripe that widens downward and is confluent around the isolated lower 
end of a broad, black stripe. A yellow figure 7 interrupts this stripe above, just 
below the wing roots. Some blackish marks follow the wing crest to rearward, 
but the sides beneath are wholly yellow, the second stripe of the sides being 
wanting. Legs yellow; sides of femora and front of tibiae lined with black. 
Abdomen very long and slender; brown above with black apical saddle marks 
on segments 1-6, becoming diffuse rearward; 8-10 mostly black above. Side 
margins of 1-8 yellowish; 9 with two included yellow spots and 10 mostly yellow. 
Tips of appendages black, tufted with golden hairs. 
268. Lestes uncatus Kirby 
Kirby ’90, p. 160: Mtk. Cat. p. 39: Kndy. ’15, p. 324: Garm. 717. p. 492 and ’27, 
p. 104: Ndm. ’27, p. 20. 
Syn: hamata Selys 
Length 40 mm. Expanse 42 mm. N. S. and Pa. to Calif. and B. C. 
