106 
rior femora somewhat elevated near the base; posterior tibiae deeply- 
channeled exteriorly. Antennae short, robust; enlarged slightly and 
somewhat flattened at the apex. Sub-anal plate of the male tumid, 
ending in a blunt point, entire, hairy; cerci prominent, somewhat flat¬ 
tened, longer than the triangular supra-anal plate. 
Color.— Head, thorax, exterior face of the posterior femora, and a 
broad stripe along the lower margin of the elytra, grass-green or yel¬ 
lowish-green. Parts of the mouth, antennae, entire under surface and 
the four anterior legs usually a distinct and shining reddish brown. 
The upper or posterior area of the elytra ash-brown, a stripe of the 
same color along the lower or costal margin; the green of the elytra 
suddenly decreases a little behind the middle, the apical third being 
chiefly brownish; the relative proportion of these stripes vary consid¬ 
erably in different individuals. Wings transparent yellow at the base; 
the apical two-thirds fuliginous or clouded; paler at the apex. Poste¬ 
rior tibiae with a white ring near the knee, rest pale reddish or blue; 
tarsi reddish. 
Var radiata .—Head and thorax ash-brown, streaked and spotted 
with black and dark-brown. Elytra brown, where in virginiana they 
are green; anterior or costal margin near the base pale. Exterior face 
of the posterior femora cinereous; posterior tibiae dark-blue below the 
pale ring. Males much smaller and darker. 
Var. infuscata. —Male. Head and thorax narrow and compressed 
at the sides. Vertex- strongly advanced in front of the eyes, acute- 
angled; margins elevated, sharp; lateral foveolae almost obsolete. Fron¬ 
tal costa very prominent, narrow; the portion above the ocellus arcu¬ 
ate, solid; slightly narrowed at the ocellus and sulcate. Joints of the 
antennae much shortened and sub-distinct. ' Median carina of the pro- 
notum somewhat prominent, sharp, straight on top and entire; lateral 
carinse sub-acute but not elevated. 
Both sexes dusky brown; elytra faintly spotted with brown; wings 
as in virginiana except that there is often a more distinct cloud near 
the outer border, but this is also occasionally seen in the former. 
Posterior femora pale, with two large black spots on the inside; pos¬ 
terior tibiae brown, with darker spines. This is distinctly smaller than 
either of the other varieties, and the notes of the male much sharper. 
I have some reasons for believing that the males of this species are 
generally of this variety, at least so far as my observations have ex¬ 
tended, I find the females of the other varieties very largely in excess 
of the males, and precisely the reverse in reference to this variety. 
Dimensions .—Length of female 1.0 to 1.3 inches; male from .6 to 
1.0 inch. 
This is one of our most common species throughout the State, al¬ 
though never appearing in such numbers as some species of Calopte- 
nus. The larvae and pupae and even the perfect insects are occasionaly 
observed during warm days in winter. It appears early in the spring 
and continues throughout the summer. The males, especially of the 
variety infuscata are easily detected in the warm days of spring and 
early summer by their sharp clicking notes. 
