THE DRAGON-FLY. 311 
needles,” Zschna heros and grandis, seen hawking about 
our gardens till dusk. They frequently enter houses, 
carrying dismay and terror among the children. The 
hind-body is long and cylindrical, and gaily colored with 
bright green and bluish bands and spots. 
Mr. Uhler informs us that the pupa of Æschna, figured 
above, from a drawing by Mr. F. G. Sanborn, is per- 
haps that of Æschna constricta, or Æ. clepsydra. 
One of our most common Dragon-flies is Diplax rubi- 
cundula, the ruby Dragon-fly, which is yellowish red. It 
is seen everywhere flying over pools, and also frequents 
dry sunny woods and glades. Another common form is 
Diplax Berenice of Drury (Plate 9, Fig. 3 male, Fig. 4 
female. The accompanying cut represents the pupa, prob- 
ably of this species, according to Mr. Uhler.) It is black, 
_ the head blue in front, spotted with yellow, while Fig. 4. 
the thorax and abdomen is striped with yellow. 
There are fewer stripes on the body of the male, 
which has only four large yellow spots on each 
side of the abdomen. Still another pretty species 
is Diplax Elisa of Dr. Hagen (Plate 9, Fig. 5). 
It is black, with the head yellowish and with 
greenish yellow spots on the sides of the thorax aiid base 
of the abdomen. There are three dusky spots on the 
front edge of each wing, and a large cloud at the base 
of the hind pair toward the hind angles of the wing. 
Rather a rare form, and of much smaller stature is the 
Nannophya bella of Ubler (Fig. 6, female). It was first 
detected in Baltimore, and we afterwards found it not 
unfrequently by a pond in Maine. Its abdomen is un- 
usually short, and the reticulations of the wings are large 
and simple. The female is black, while the male is 
frosted over with a whitish powder. Many more species 
riod of 
