336 DRAGONFLIES OF NORTH AMERICA 
Not common in the northern states. Color, light blue and black. Male. Face 
yellowish and blue to the basis of the antennae, with only the postclypeus and 
a line at the base of the labrum, black. Vertex, antennae and the remainder of 
the frons black. Postocular spots irregular, oval and not connected. Prothorax 
black with the usual transverse pale stripe on the anterior lobe, the two lateral 
spots on the middle lobe, and pale line on the posterior margin of the hind lobe. 
Middorsal black stripe of the thorax wide, pale antehumeral stripe about as 
wide as the black humeral. A short line of black at the posterior end of the second 
lateral suture, connected with the humeral by a dark band across the wing base. 
A black basal spot on the third lateral suture. Vein M: arises between the 5th 
and 6th postnodal cross veins in the fore wing, the 4th and 5th in the hind. 
Abdomen blue with the following black: a basal spot on 1; an apical spot and 
ring occupying the dorsal half of 2; a third to a fourth of 3-5; two-thirds of 6; 
nearly all of 7; and all the dorsum of 10. 8—9 entirely blue. Superior appendages 
similar to those of carunculatum and civile but differ in having a smaller pale 
tubercle at the end and in being much wider proximal to the tubercle. 
Female, similar to male. Abdomen with segments 1-10 with broad dorsal 
black stripes and interrupted basal rings. 
333 Enallagma civile Hagen 
Hag. ’61, p. 88: Mtk. Cat. p. 56: Garm. 717, p. 531 and ’27, p. 68. 
Syn: canadense Prov. 
Length 29-32 mm. Expanse 38-44 mm. North America 
A common species about ponds from June to September and generally dis 
tributed. Color blue and black. Male. Mouth parts buff. Head pale. Post 
clypeus with a dark basal spot. Pale transverse frontal band wide, reaching to, 
and sometimes including the basis of the antennae. Vertex, remainder of an 
tennae and remainder of the frons, black. Pale postocular spots large and oval 
and usually separated from the pale postocellar stripe, and the pale of the rear 
of the head. Prothorax black, the anterior lobe with a pale transverse line, and 
the middle lobe with a pale spot on the lateral margins, and the sides pale, and 
the posterior lobe with the hind margin, pale. Thorax with the middorsal black 
stripe broad, the pale antehumeral stripe broad, and the dark humeral stripe 
narrow, widest anteriorly. A black basal spot on the third lateral suture. Ab- 
domen blue, the following black: basal spot on 1; apical spot and ring on 2; 
apical fourth to third of 3-5; half of 6; nearly all of 7; and all the dorsum of 10. 
8-9 entirely blue. Superior appendages black, shorter than 10, widely bifid, 
the two arms of nearly equal length with a large tubercle between them. 
Female similar to the male. Abdomen: the dorsum of all segments have a 
black longitudinal stripe from their basis to the apices, and a short narrow apical 
black ring. Pale color of the sides of the segments extending onto the dorsum 
at the basis of 2-6, but never connecting across the middorsal line as they do 
in carunculatum. 
334. Enallagma culicinorum Byers 
Byers ’27, p. 249. 
Length 30 mm. Expanse 44 mm. Utah 
A recently described species, known as yet from one male taken in the 
vegetation in still water along Logan River. Color, yellow and black (probably 
