1908] 
Muttkoicski, Dragon Flies of Wisconsin. 
71 
Face and thoracic stripes yellow or green. Abdomen greatly attenu- 
ated, segments 1 — 5 light brown basally, black apically, the black form- 
ing distinct apical rings ; 6 — 10 black ; 1 — 7 with narrow rings at the 
joints. 
Female. — Abdomen shorter, stout, bronze on dorsum, basal rings 
on 1—7. 
Life Zone : Transition and Upper Austral. 
Wisconsin: Milwaukee Co., July 17, 1900, Aug. 4, 1901, July 17- 
Aug. 24, 1903, Aug. 31, 1904, Aug. 3, 1907. 
Time and Habitat — June to September near banks of rivers, in 
woods and swampy thickets. 
Lestes vigilax Hagen, Bull. Ac. Belg. (2), 13, p. 306, 1862; Need- 
ham, Bull. 68 N. Y. State Mus., p. 235, 1903 (Bibliography). 
Abd. male 40, female 26 ; h. w. male 25, female 26. 
Male. — Color metallic green, marked with yellow. Thoracic stripes 
yellow or pale g-reen. Abdomen green, apical segments dull, sides of 
1 — 5, and part of 6 yellow. Basal segments with a narrow basal ring 
of 3"ellow, and a subapical one of black. Stigma of both sexes yellow. 
Female.— Like male. Humeral stripes wider, and segments 9 — 10 
of abdomen largely- j^ellow. 
Life Zone : Upper and Lower Austral. 
Wisconsin : Milwaukee Co., 1900. June 29-July 27, 1903 ; Nago- 
wicka Lake, July 26, 1902 ; Waukesha, July 1902. Next to rectangularis 
our commonest species. 
Time and HalDitat — July to September about the marshy shores of 
lakes and jDonds. 
ARGIA Kambur, Ins. Nevr., p. 254, 1842; Calvert, Bull. Mus. Comp. 
Zool., 39 :4, p. 105, 1902 (Bibliography) ; Needham, Proc. U. S. Nat. 
Mus., 20, p. 710, 727, 1903 (Venation). 
A large genus of small species, numbering in all about 65, 
the majority of which are found in North and South America. 
The imagos frequent chiefly the rank vegetation of swamps and 
marshy places, but a few of them are sun-loving and fly in open 
places. Two species have thus far been taken in the state, but a 
third can be expected with some certainty. Species of the Upper 
Austral areas may be identified according to the following table : 
MALES. 
1. Stigma above more than a single cell 2 
Stig'ma above not more than a single celt 3 
2. Apical segments of abdomen black putrida 
Apical segments 8 — 9 with the basal half blue translata 
3. Wings clear, or faintly tinged at the apices 4 
Wings entirely smoky brown fumipennis 
4. Segments 1- — 7 ringed with, and 8 — 10 entirely blue 5 
Segments 2 — 7 black. 9 — 10 blue tibialis 
5. Abdominal segments 1 — 7 largely blue 6 
Abdominal segments 1 — 7 largely black 7 
6. Thorax violet, humeral black, bifid above, not wider than the 
antehumeral violacea 
