326 DRAGONFLIES OF NORTH AMERICA 
Posterior lobe of pronotum black, unspotted, margined with yellow; anterior 
lobe with pale transverse band. Thorax with the following black: a wide mid- 
dorsal stripe, widest in front; a wide humeral (wider than pale antehumeral) 
stripe, widest below, expanded on and just behind its crossing of the humeral 
suture. Abdomen black as follows: dorsum of 1, divided by an apical spot of 
blue or purple; posterior half of 2, third of 3, two-fifths of 4, half of 5, three- 
fourths of 6, four-fifths of 7, and all of 10; 8-9 blue. Superior appendages half 
as long as 10, in profile view broader than long.’’ The superiors are not bifid, 
however, the posterior margin is shallowly excavate, giving the appearance of 
two parts broadly connected. 
The female is still unknown after some thirty-eight years of collecting. 
314. Enallagma geminatum Kellicott 
Kiet. 95, p. 239: Mtk. Cat. p. 59: Garm. 717, p. 544 and ’27, p. 73. 
Length 26-27 mm. Expanse 35 mm. N. Y. to Wis., Ill. to Fla. and La. 
This species is regionally common or rare, collected mostly at ponds where 
it flies very close to the water. Colors, light blue and black. Male. Face light 
blue, the labrum with a black basal spot. Postclypeus black. The frontal trans- 
verse pale band reaching just to the basis of the antennae. Vertex, antennae and 
the remainder of the frons, black. Pale postocular spots oval, their margins 
frequently serrated, and not connected. The usual pale postocellar stripe is 
wanting. Dorsum of the prothorax with the anterior and the posterior lobes 
mostly blue; the middle lobe entirely black on the dorsum, sides pale. Thorax 
with the middorsal black stripe wide. Pale antehumeral stripe irregular, not 
reaching the caudal margin of the sclerite, contracted at the caudal third or 
fourth, and occasionally interrupted to form an exclamation point. Humeral 
black stripe widest below. A black basal line on the third lateral suture. Ab- 
domen: the first segment blue, a black basal spot occupying half the dorsum, and 
the caudo-lateral margins black; second segment blue, except a subapical dorsal 
spot, an apical ring, and a longitudinal lateral stripe, which are black; segments 
3-7 with longitudinal black stripes on the dorsum from near the bases to the 
apices. 8-9 with the dorsum blue, but with a lateral marginal stripe from the 
the bases to the apices dark brown or black. Superior appendages shorter than 
10, and not bifid. 
The female is similar to the male, except abdominal segments 9-10 are en- 
tirely brown on the dorsum; 8 brown with two large blue spots occupying most 
of the segment and separated by a dark mesal line. 
315. Enallagma recurvatum Davis 
Davis 13, p. 15: Garm. ’27, p. 78. 
Length 30 mm. Expanse 34 mm. N. Y. and N. J. 
A species very closely related to E. hageni, and as yet only recorded from the 
vicinity of New York City. Male. Color pale blue and black. Head black, 
beneath pale, the following blue; band on front between eyes and postocular 
spots. Prothorax black above, pale beneath; thorax with a middorsal, a humeral 
stripe, and a basal spot on the third lateral suture, black. Abdomen blue, black 
as follows: a basal spot on the dorsum of 1; apical ring and spot on 2; apical 
