1908] 
MuttJxoir.ski, Dragon Flies of Wisconsin. 
69 
The species of this genus have their habitat usually near stand- 
ing waters, though they are also met with in woods flying among 
the low foliage of bushes. Nine species inhabit the northern life 
areas, seven of which are resident in the state. It is possible that 
the two others may also be found in Wisconsin, but they have not 
been recorded thus far. The species group themselves naturally 
in three series according to the relative length of the superior and 
inferior appendages of the male. 
A. Inferior appendages less than half the lengi:h of the superiors 
eurinus & congener 
B. Inferiors more than half the length of the superior appendages 1 
1. Male inferior appendages straight, the apex dilated, or not 
so 2 
Male superior appendages sigmoid unguiculattis 
2. Thorax metallic green, carina and humerals, if yellow, very 
narrow 3 
Thorax brownish 4 
3. Abdomen less than 34 mm. in leng^th uncatus 
Abdomen more than 34 mm. in length vigilax 
4. Abdomen very long and slender, about 40 mm. . . . rectangularis 
Abdomen shorter, brighter than thorax 
disjunctus & forcipatus 
C. Inferiors long'er than superiors, incurved ; rear of head in both 
sexes yellow insequalis 
The females of group B may be separated, as follows : 
1. Rear of head blackish 2 
Rear of head with a j'-ellow band unguiculatus 
2. Thorax green 3 
Thorax brownish 4 
3. Basal half of segment 1 of abdomen yellow uncatus 
Segment 9 & 10 largety yellow vigilax 
4. Pterostigma black 5 
Pterostigma brown disjunctus 
5. Basal rings on 3 — 7 interrupted on dorsimi forcipatus 
Basal rings on 1 — 6 not interrupted on dorsum, narrow 
rectangularis 
Lestes eurinus Say, Journ. Acad. Sci. Phila., 8, p. 36, 1839 ; Hagen, 
Syn. Neur. N. Am., p. 70, 1861 ; Needham, Bull. 68, N. Y. State Mus., p. 
233, 1903 (Bibliography & Desc. of nymph). 
Abd. male and female 38 ; h. w. male 28, female 30. 
Male. — Dark metallic green. Thoracic carina and humerals black, 
sides of thorax and beneath, sides of abdomen and basal rings on 3 — 7, 
yellow. ' 
Female. — Mid-dorsal thoracic carina yellow. The species is readily 
distinguished from all others by its size and the slightly flavescent 
wings. 
Life Zone : Transition and Upper Austral. 
Wisconsin : Milwaukee Co., July 17, 1902 ; Western Wisconsin. 
Time and Habitat — June to August about stagnant pools. 
Lestes unguiculatus Hagen, Syn. Neur. N. Am., p. 70, 1861 ; Need- 
ham Bull." 68, N. Y. State Mus., p. 235, 1903 (Bibliography & Desc. of 
nymph) . 
