1908] 
Muttkowski, Dragon Flies of Wisconsin. 
81 
Hagenius brevistylus Selys, Bull. Ac. Belg-. 21 (2), p. 82, 1854; 
Hagen, Svn. l^eur. N. Am., p. 114, 1861; Kirby, Synonymic Cat., 1890; 
Needham; Bull. 47, N. Y. State Mus., 440, 1901 (Bibliography). 
Abd. male 55, female 60 ; h. w. male 48, female 52. 
Male. — Black and yellow. Face yellow, vertex and occiput black. 
Thorax black ; carina, a curved line on either side, narrow humerals, 
and two broad stripes on the sides, yellow. Abdomen black, a mid- 
dorsal yellow band on 1—8, sides of 8 and 9 yellow. Appendages shorter 
than 10. Wings faintly flavescent, costa yellow, pterostigma long, 
orange or j^ellowish. 
Female. — Like the male. Occiput with hind border twice tubercled. 
The last segments of the abdomen are expanded laterally. Appendages 
as long as 10 ; vulvar lamina one-fourth as long as 9, black, and apex ex- 
cavated. 
Life Zone : Listed from many regions through four f aunal areas, 
Boreal, Transition, Upper and Lower Austral, and also the Gulf strip 
of the Lower Austral. 
"Upper Wisconsin Kiver" (Hagen). 
Time and Habitat — June to September over rapid streams. 
OPHIOQOMPHUS Selys, Bulk Ac. Belg. 21 (2), p. 39, 1854. 
A small group of brightly colored and closely related species. 
The main distinguishing characters are those based on the mark- 
ings of the legs and the form of the male abdominal appendages. 
A single species is known from the state. 
Ophiogomphus rupinsulensis Walsh, Proc. Ac. Phila., p. 388, 1862; 
Selys, Bull. Ac. Belg. 46 (2), p. 434, 1878 ; Needham, Bull. 47 N. Y. State 
Mus., p. 437, 1901 (Bibliography). 
Abd. male 39,, female 38; h. w. male 31, female 32. 
Male. — Green and brown. Head green. Thorax with humerals 
wider above, ante-humerals and a spot on the sides indistinct brown or 
obsolete. Abdomen brown marked with yellow on dorsum. Segment 
1 — 9 with basal elongated spots, pointed apically, 1 & 2 and 7 — 9 later- 
ally, and most of 10 greenish yellow. Segments 7 — 9 somewhat ex- 
panded. Wings with costa yellow or green, pterostigma brown. 
Female. — Similar. Markings diffused. 
Life Zone : Transition and Upper Austral areas. 
Wisconsin: "L^pper Wisconsin River" (Hagen). 
Time and Habitat — Moist woods and marshes from May to July. 
GOMPHUS Leach, Edin. Encycl. 9, p. 137, 1815; Needham, Proc. 
U. S. Nat. Mus., 26, 715, 718, 721, 732, 1903 (Venation). 
One of our most interesting and widely extended groups. The 
habits of the species are varied, certain ones frequenting the shores 
of some stable body of water, others preferring the rapid move- 
ment of rushing streams, or the sun-shine of fields and open places.^ 
They are often very hard to capture, being the most cautious and 
wary of dragon-flies. 
The climatic conditions in Wisconsin ought to be very favor- 
able to the Gomphines. Every variety of aquatic habitat is of- 
fered, beginning with swamps and creeks to large lakes and rivers. 
