222 
IOWA ACADEMY OF SCIENCES. 
Var. a. Female: General color yellowish -white, meso-metathorax pale 
yellow, basal joints of antennae concolorous with head, joint 3 and base of 
joint 4 dusky; the remainder of the antennae and spot at distal end of 
tarsi, brownish-black; eyes dark red-brown; ocelli nearly colorless; inner 
margins red; anterior wings indistinctly clouded with fuliginous at base, 
distal portion clearer; brown markings as follows: A clearly defined 
saddle-shaped patch on posterior portion of prothorax, concave along its 
front border, nearly interrupted by a wedge-shaped incision extending 
forward from posterior border; anterior border of mesonotum; scutellum 
except median stripe; bands at base of abdominal segments two to seven, 
dilated at sides, and narrower and fainter along intervening space; patch 
on upper side of all the femora, darkest on posterior pair. 
One specimen, taken on clover August 14, 1893, and one 
on hackberry, October 6, 1893, Ames, Iowa. 
Another specimen taken on hackberry, October 6, 1893, at 
Ames, Iowa, corresponds with the description of variety a 
except that the thorax is a deeper yellow. 
Another specimen taken on elm, August 21, 1834, is more 
uniformly yellow, the anterior wings more uniformly dusky, 
bands at base of abdominal segments narrov/er and other 
markings fainter. 
A fourth specimen that may be placed in this group resem- 
bles the first, but it is of a deeper yellow color; the markings 
on the prothorax are prolonged farther backward, and the 
wings are more uniformly fuliginous. Ames, Iowa, Oct. 8, 1893. 
Var. h. Male and female: Body pale yellowish, immaculate; apical 
joints of antennae black, remainder pale; wings and fringes tinged with 
yellowish. 
Hawthorn and hackberry, Ames, Iowa, October 6, 1893. 
Var. c. Male and female: Wings nearly uniformly fuliginous; last 
three joints antennae, distal half of joints 4 and 5 black, sometimes inter- 
mediate joints altogether dusky; brown markings very distinct, confined to 
two large spots on thorax and scutellum respect! ve.ly, the latter oblong and 
approximating posteriorly; abdomen immaculate. 
Hawthorn and hackberry, October 6, 1893, Ames, Iowa. 
Var. d. Male and female: This variety is characterized by having the 
wings fuliginous, trifasciate with white bands, and in being more heavily 
marked with brown; the markings on the thorax and bands at base of first, 
second and third (sometimes of second and third only), and seventh and 
eighth segments of the abdomen are extended until they coalesce and form 
broad bands; the dorsal surface of the head is brown; sometimes all of the 
caudal segments are brown; the legs are white, with brown streaks on 
dorsal surface of femora, and frequently on tibim also; antennae as in pre- 
ceding variety. 
