120 
Bulletin Wisconsin Natural History Society. [Vol. 6, Nos. 1 — 2. 
a brown band crosses the wing, while the extreme apices are hyaline 
and yellow. Also the wings are wider than those of the male. 
Life Zone : Transition and Upper Austral. 
Wisconsin : Milwaukee Co., July 7, 1902 ; July 20, 1903. 
Time and Habitat — JNIay to early August near creeks and road- 
sides and in moist woods. 
Libellula pulchella Drury, 111. Exot. 1, p. 115, 1770 ; Hagen, Syn. 
l^eur. N. Am., p. 153, 1861 ; Needham, Bull. 47, N. Y. State Mus. 26, p. 
763, 536, 1901 (Bibliography & desc. of nymph) ; Needham Proc. U. S. 
Nat. Mus. 26, p. 763, 1903 (Venation). 
Abd. male 32—35, female 32—33 ; h. w. male 42—45, female 42—43. 
Male. — Brown, yellow and fuscous. Face light brown to black, a 
band below the frons lighter. Thorax above pale, humerals broad, 
fuscous, two lateral stripes of bright yellow, reduced to inferior spots 
in older individuals. Legs black, the base of the femora lighter. Wings 
hyaline, nervure brown or black, stigma black, costa lighter. All wings 
with a basal streak, a large nodal spot, and infuscated apices, black 
to fuscous, alternating with milk-white spots. The hind wings also 
with a white anal spot. In the fore wings the basal streak is bounded 
by the sub-costal vein above, by the cubital below ; on the outer side 
the fuscous area extends to a little beyond the triangle, which is usu- 
ally fuscous in the upper half. The nodal spot reaches across two 
thirds of the width of the wings. The hind wings differ slightly, the 
basal streak being broader at the base. Abdomen light brown, a yellow 
stripe on each side of the dorsum. Appendages dark brown to black. 
Adults are blackened or pruinose, the markings obscured. 
Female. — Differs from the male by the more inflated abdomen and 
the absence of the white spots on the wings. 
Life Zone : Transition and Austral zones. Distribution encom- 
passing entire North America. 
Wisconsin : Dane Co., June 1890 ; June 7. 1901 ; Milwaukee Co., 
June 4, 1899; July 1-10, 1900; July 1-8, 1901; July 10, Sept. 30, 1903 ; 
Aug. 1-15, 1907. This is our commonest Libellula, and occurs practic- 
ally in all parts of the State. 
Time and Habitat — June to August along rivers, creeks and road- 
sides, in woods, fields and open places. 
PLATHEMIS Hagen, Syn. Neur. N. Am., p. 149, 1861. 
A single species is known. 
Plathemis lydia Drury, 111. Exot. Ent. 1, p. 112, 1770 ; Hagen. Syn. 
Neur. N. Am., p. 149, 1861 ; Needham, Bull. 47, N. Y. State Mus., p. 536, 
1901 (Bibliography & desc. of nymph) . 
Abd. male 27 — 28, female 25 — 26 ; h. w. male and female 33. 
Male. — Color brown. Face brown, mouth parts lighter. Thorax 
above pale, some irregular humeral spots of brown, sides with two 
white stripes ending in bright yellow below. Wing-s hyaline, nervure, 
costa and stigma black. The fore wings with a fuscous basal streak 
bounded above and below by the sub-costal and cubital space, reaching 
to the base of the triangle, the latter clear. A broad fuscous band be- 
ginning a little distance before the nodus and extending to the middle of 
the stigma crossing the wing to the posterior margin. Hind wings sim- 
ilar, but the basal streak envelops the triangle and is followed by a milk- 
white anal spot. Apices of all wings clear. Legs brown, femora 
