ENALLAGMA 335 
narrow pale antehumeral stripe. Sides of the thorax pale with a short basal 
black line on the second and third lateral sutures. Abdomen with the dorsum of 
1-8 and 10 practically entirely black, sides and all of 9 pale, except for a pair 
of black dorsal spots on 9. Superior appendages black, widely bifid, the two 
arms of about equal length, with no tubercle. 
The female has the dorsum of 1-9 broadly black and 10 pale. 
331. Enallagma carunculatum Morse 
Morse 795, p. 208: Mtk. Cat. p. 56: Garm. 717, p. 528 and 27, p. 67: Ndm. ’23, 
p. 131: Smn. ’27, p. 14. 
Length 33 mm. Expanse 42 mm. B. C., Calif.. Nev. to N. Y. and Conn. 
A very common damselfly about large bodies of water, remaining late into the 
autumn after most other Enallagma have disappeared. Color, dark blue or buff 
and black. Male with the head below blue and buff; above entirely black, except 
the narrow lateral margins of the postclypeus, the transverse frontal band, and 
the two isolated postocular spots, which are blue. Prothorax black, with a trans- 
verse median stripe on the anterior lobe, the posterior margins of the hind lobe 
and a pair of small crescent shaped spots and the sides of the middle lobe, blue. 
Thorax with the mid-carina black or lined with pale, middorsal dark stripe 
broad; humeral dark stripe of moderate width, variable; antehumeral pale stripe 
varying in width from nearly twice as wide to only two-thirds as wide as the 
VK Vs De Ls 
antennatum carunculatum civile 

doubledayi 

humeral. Third lateral suture with black basal spot. Abdomen blue, black as 
follows: 1 with a basal spot and a short lateral apical line; an apical spot broadly 
connected with an apical ring on 2; apical third to half of 3-4; one-half to three- 
fifths of 5-6; almost all of 7; none of 8-9; all the dorsum of 10. Superior ap- 
pendages black, shallowly bifid, with a clear yellowish tubercle between the arms, 
shorter than 10. 
Female similar to male except the abdomen has the dorsum of 1-10 with 
broad black stripes widened subapically and narrowed to a median line near 
the base of the segments, where the pale of the sides meets across the dorsum. 
There is apparently a great variation in the color pattern of this species, some 
individuals possessing a great deal more black than others, the pale spots of the 
prothorax tending to disappear and the postocular spots to be reduced. 
332. Enallagma doubledayi Selys 
Selys 50, p. 209: Mtk. Cat. p. 58: Garm. ’17, p. 538 and ’27, p. 71: Root ’24, p. 
319. 
Length 31 mm. Expanse 40 mm. Mass. to Ohio, Ill. and Fla. 
One of the commonest damselflies of the south, occurring in large numbers 
throughout the summer at all permanent and semipermanent ponds and swamps. 
