72 DRAGONFLIES OF NORTH AMERICA 
flying over Little Clear Creek in the places where the shallow current 
rippled over sand. The males would fly back and forth a few times and 
then rest for a time on some prominent twig near shore, generally on 
a higher bank. They were not difficult to approach or to capture when 
at rest. Except when ovipositing, the females seeemed to remain less 
in the vicinity of the water. The female makes a succession of sweeps 
back and forth near the head of some little riffle striking the water, 
after short flights, again and again near the same place, leaving her 
eggs in it. 
Imagos, living and mature, are of a rich deep green color with the 
usual oblique stripes of blackish brown. Unfortunately the color fades 
readily, even whey daylight is excluded. 
occidentis 
aspersus 

The nymphs were very common in the sandy bed of the creek. 
The cast skins were abundant along the banks through the months of 
June and July, sticking to whatever support offered, within a foot of 
the edge of the water. 
The nymph is a rapid burrower, trailing along at a slight depth 
through nearly clean sand under the currents, often leaving a faint 
line behind showing where the tip of the abdomen, upturned for res- 
piration, has pushed the sand grains aside. 
13. Ophiogomphus carolinus Hagen 
Hag. ’85, p. 259 (nymph): Ndm. ’99, p. 238: Mtk. Cat. p. 83. 
Length 48 mm. Expanse 60 mm. N. C. 
Similar in coloration to O. aspersus. Stripe 1 of the thorax is more distinct; 
4 and 5 are absent. There is no pale median spot on the middle of the posterior 
part of frons (not always present in aspersus); the pale line on exterior of tibiae is 
narrower. The real distinction between the two species is that of genitalia as 
stated in our key. 
