1908] 
Muttkoicsici, Dragon Flics of Wisconsin. 
67 
N. Am., p. 57. 1861; Needham, Bull. 08 N. Y. State Mns., p. 223, 1903 
(Biblio^2:raphy) . 
Abd. male 36. female 34 ; h. w. male 28, female 30. 
Male.--]MetaUio green and bine. Thorax with black on the lateral 
sntures, yellow below. Eear of head Avith a tubercle each side. Wings 
yellowish hyaline, the apical fifth or sixth fuscous to black. 
Female. — Similar. Apices of wings brown, fainter in the hind 
wing's. Pterostigma varying- in size, white, reticulated. 
Life Zone : Upper and Lower Austral. 
Wisconsin : Dane Co., June, 1890 ; Milwaukee Co., June 12, 1896 ; 
Washing-ton Co., Little Cedar Lake, Aug-. 1-15, 1907. 
Time and Habitat — Over rippling waters June to Aug'ust. 
H/ETERINA Hag-en, Syn. Cal., p\ 30, 1853, Svn. Neur. N. Am., p. 58, 
1861; Needham, Proc. U. S. Nat. Mus., 26, p. 745, 1903 (Venation). 
The Species of this genus have similar habits to those of the 
preceding. Like the species of Calopteryx they frequent the 
sunny ripples of quick-flowing streams. The fauna of Wisconsin 
contains but one species, though it is likely that a second may be 
found in the extreme southern parts of the state. Other species 
are found only in the south. The two northern species are separ- 
able by the following differential characters : 
1. Males. — Base of all wing-s red; tibite yellow externally, .americana 
Base of hind wings brown, apices dark; tibiae black. . 
tricolor 
2. Females. — Wings flavescent at base and along costa ; tibiae yel- 
low externally .* americana 
Wings flavescent throughout; tibias entirely black. . 
tricolor 
Haeterina americana Fabricius, Ent. Syst. Suppl., p. 287, 1798 ; 
Hagen, Syn. Neur. N. Am., p. 60, 1861 ; Needham, Bull. 68 N. Y. State 
Mus., p. 226, 1903 (Bibliography & Decs, of nymx^h). 
Abd. male 34—38, female 32—33 ; h. w. male 28—30, female 30—31. 
INiale. — Is characterized by the color of the wings, bright red at 
the basal fourth, copper colored in young specimens, the coppery head 
and thorax, and dull g-reen abdomen, with basal rings of white on each 
segment. 
Female. — Wings flavescent basally and along costa, sometimes 
throughout the extent of the wing. Thorax and head green, abdomen 
green dorsally, with a linear mid-dorsal stripe and rings on the abdom- 
inal joints white. Body yellow beneath. 
Life Zone : Transition, Upper and Lower Austral. 
Wisconsin: Dane Co., July 1900; Milwaukee Co., Sept. 1, 1901, 
July 8, 1902, June 14, July 10-27, 1903 ; Waupaca, Aug. 15,, 1902. 
Time and Habitat — June to September near quick-flowing streams, 
and small rapids. 
FAMILY AGKIONID.^:. 
SUB-FAMILY AGRIONINAE. 
This group comprises eight genera for our northern life areas, 
including therein the smallest damsel-flies known to our fauna. 
