BLACK-WINGED LIBELLULA. 
Generic Character. 
Mouth consisting of several mandibles. 
Antennce very slender, filiform, shorter than 
thorax. 
Wings spreading. 
Abdomen lengthened. 4 
Specific Character, &c. 
Biue-Green LIBELLULA, with a broad black 
band across the wings. 
Black-winged Dragon-Fly. 
Banded LIBELLULA. 
The Libellula Virgo, one of the most common 
species in this country, is generally seen flying, 
(luring the morning hours, about the banks of ri¬ 
vulets, or stagnant waters. The general colour of 
the body is deep blue-green, while the wings are 
marked in the middle by a very large patch or area 
of blueish-black. The insect varies however in 
point of colour more than any other species, and is 
sometimes seen with the wings perfectly plain or 
unmarked, and sometimes, on the contrary, en¬ 
tirely blue-black: the tinge of the body also varies 
in a similar manner, being either bright golden- 
green, deep lucid blue, or even sometimes brown. 
