EPIAESCHNA 133 
to the frons above. Top-of frons porcelain blue, more obscure basally. The 
bifid summit of the vertex is blue. The lateral ocelli, inserted upon its upper 
surface, are narrowly ringed with yellow. The occiput is very narrow, limited 
to the rear of the very long eye seam. Thorax compact, smooth, shining with 
very short obscure vestitute. Front brown with 2 broad bluish green stripes 
abbreviated below, where there points are directed laterally, dilated above into 
T-shaped or 7-shaped summits near the crest. Sides greenish blue between 3 
broad bands of brown, the first on the humeral suture (stripes 2 and 3) emarginate 
below; the second on the second lateral suture (stripe 5) widened below and with 
a spur running forward; the third covering the rear of the thorax. Legs black, 
becoming rufous basally. Wings hyaline, becoming a little rufous; stigma narrow 
tawny. Abdomen slender, little widened at base, little constricted on 3, slowly 
tapering; auricles of male large, triangular; sides of 1, 2, 3, bluish green below. 
Remainder of abdomen very obscurely spotted with paler on a background of 
brown with shining subbasal and apical rings of black encircling all the segments 
Appendages short and slender, shining brown. 
21. Eprarscuna Hagen 
These are among the largest of our dragonflies, attaining a wing 
expanse of 116 mm. The face is vertical and not acutely angulated at 
top of frons; the head is very wide, due to the huge, bulging eyes. 
The radial sector is forked rather symmetrically. The radial planate 
subtends 2 rows of cells. Veins M, and Mz converge behind the 
stigma. 
These are voracious swift flying dragonflies, widely and generally 
distributed throughout the eastern United States. Due to their strik- 
ingly large size, their fearless approach and their habit of flying into 
open windows betimes, they are rather well known. They are exceed- 
ingly hard to capture in flight. There is but a single species. 
The nymph is a very large smooth, greenish creature with a some- 
what spindle shaped abdomen. It has no dorsal hooks but it has lateral 
spines on segments 5-9 of the abdomen. The mentum of the labium is 
parallel sided in its basal half and then suddenly and roundly widened 
to the base of the rather slender lateral lobes. The front border of 
the mentum is divided into 2 smoothly rounded lobes whose convergent 
curves meet in a median acute notch. The inner border of each lateral 
lobe is armed with a dozen sharp denticles, and there is a longer, 
stronger, internal tooth at its tip. 
The senior author collected a cast skin of this species at Dead Pond 
near Rock Bluff P. O., Florida, on April 2nd. It was clinging to the 
bark of a cypress tree more than 6 feet above the surface of the water. 
The tree stood in a sphagnum filled pond. 
