94 Bulletin Wisconsin Natural History Society. [Vol. 6, Nos. 1 — 2. 
Thorax with dorsal stripes narrow, each divided for some length ; 
face suffused with brown vinosa 
Thorax with dorsal stripes wider, continuous; face clear green. . . 
grafiana 
Boyeria vinosa Say. Journ. Ac. Phila. 8. p. 13. 1839; Hag-en, Syn. 
Neur. N. Am., p. 130, 1861 ; Needham, Bull. 47 K Y. State Mus., p. 465, 
1901 (Bibliography & Desc. of n.^aiiph). 
Abd. male and female 50; h. w. male 42, female 44. 
^lale. — Dark brow^n, marked with green and yellow. Face green- 
ish, suffused w^ith brown. Thorax brown, dorsum each side with a 
green stripe, each divided for part of their length ; laterally the thorax 
with two bright yellow spots. Wings hyaline, brown at base, the 
apices sometimes suffused with brown. Abdomen constricted at seg- 
ment 3, each segment with transverse carina. Dorsum of segment 2 
with a basal spot and an apical one, 3 — 5 with a small apical spot, 
3 — 8 with an obscure at the transverse carina, 9 at the apical half, and 
9 and 10 entirely, yellow. All the spots on segments 2 — 8 are divided 
to twin spots by the longitudinal mid-dorsal carina. Sides of 4 — 8 
with a small yellow spot. Superior appendages dark brown, inferiors 
yellow. 
Female. — Similar ; the dorsal stripes on the thorax are obscured. 
The hind wings differ from those of the male by the rounded anal 
angle. 
Life Zone : Boreal, Transition and Upper Austral. 
Time and Habitat: June to September, along shaded streams. 
Boyeria grafiana Williamson. Fnt. News, 18, p. 1, 1907 (Descrip- 
tion) . 
Abd. male 48 — 51, female 46 — 47 ; h. w. male 40 — 43, female 43. 
The markings of this species, which was long mistaken for vinosa, 
are similar to those of the related species. But while the ground color 
of the latter species is brown with yellow and g'reen markings, grafiana 
is black and gray with chiefly blue markings, the color contrasts are 
sharper, the markings more clearly defined. The wings have a smaller 
number of cells than vinosa, the pterostigma is about 5 mm. shorter. 
Life Zone : Thus far collected in the Boreal and Upper Austral. 
Time and Habitat- — June to August along streams. 
BASI^SCHNA Selys, Bull. Ac. Belg. 5 (3), p. 735, 1839 ; Needham, 
Proc. U. S. Nat. Mus. 26, p. 710 (Venation). 
Basiasschna janata Say, Journ. Ac. Phila. 8, p. 13, ]839; Hagen, 
Syn. Neur. N. Am., p. 125, 1861 ; Needham, Bull. 47 N. Y. State Uus., 
p! 466, 1901 (Bibliography & Desc. of nymph) ; Needham. Proc. U. S. 
Nat. Mus. 26, p. 762, 1903 "(Venation) . 
Abd. male 40 — 43, female 43 ; h. w. male 37 — 38, female 39. 
Male. — Brown, marked with green and yellow. Face greenish, 
reddish in faded specimens, frons with a black T spot above. Thorax 
with a dorsal stripe green on each side of the carina, the stripes diverg- 
ing at the anterior edg-e. Sides each with two yellow or white strix>es 
margined with black. Legs brown. Wings hyaline, spotted at the 
base with dark brown, the nervure dark brown, costa and pterostigma 
yellow ; the postnodal cells, especially those nearer to the stigma, are 
tinged with yellow. Abdomen marked with green rings and spots, the 
