284 DRAGONFLIES OF NORTH AMERICA 
right bank of the river..... From the drift the Neoneura flew out 
to hover motionless above the deep water of the pool. As the collector 
approached they would disappear, leaving him to guess at the direction 
of their flight. I have collected several species of Neoneura and 
the flight and actions of all have been similar. Their agility must 
be seen to be appreciated. And almost invariably they have been found 
about deep pools in small streams with drift or overhanging bushes near 
at hand.” 
62. Hyponrura Selys 
Rather large and heavily built, clear winged damselflies with stout 
spiny legs. The thorax is strongly bulged above the bases of the fore 
legs. The stigma of the wings is rather large, surmounting two entire 
cells. The quadrangle is very short and broad, especially in the fore 
wing. 
The nymph is a rather large, dark colored climber with very thick 
gills; the paired ones with heavy midlateral external ridges. The labium 
generally lacks raptorial setae; occasionally there is a single lateral one. 
This Sonoran genus which enters our southwest border is represented 
by the following species: 
274. Hyponeura lugens Hagen 
Hag. ’61, p. 95: Mtk. Cat. p. 44: Smn. ’27, p. 11. 
Length 42 mm. Expanse 64 mm. N. Mex. and Ariz. 
This is a stout bodied bluish species that varies very much in depth of colora- 
tion. Face in young specimens is of a light tan color, paler in labrum, becoming 
wholly black with age. Thorax bluish green with a black carina, developing, when 
a little older, narrow black stripes as follows; a narrow pale pair on the front, 
rather close to the carina; a very narrow line on the humeral suture; a broader 
but incomplete one on the yellow area behind it, narrowly connected below with 
the black spot above the base of the fore leg; a short stripe on upper end of mid- 
lateral suture and a complete line on the third lateral suture, these connected 
at the wing roots. Thorax, in old males, wholly black. pruinose. Legs yellowish, 
blackish about the knees, darkening with age. Abdomen stout; two submedian, 
dorsal, black streaks are narrowly connected near apex of all middle segments. 
Paler color more extensive on end segments. Appendages pale. 
63. Arara Rambur. 
By C. Francis Byers 
Argia is a very complex genus, found chiefly in the American tropics 
but represented in our limits by 18 species. Unlike most of the damsel- 
flies, they seem to have a pronounced distaste for vegetation. The 
imagoes are to be found commonly flying very low above hard clay 
