64 
IOWA ACADEMY OE SCIENCES. 
Vertex slightly convex except before the apex, slightly acutely 
angled, margins rounding to the acute apex, two-thirds the length 
of the pronotum. Face distinctly convex as seen from side, the 
front broad. Elytra long, narrow at the apex, the apical cells long 
and narrow — the second one especially so, outer anteapical cell 
acuminate anteriorly. 
Color; face and vertex yellow, separated by a broad black band, 
striated just below the margin, a line on either side extending in 
on the suture, sometimes angled to the ocellus. Pronotum reddish, 
a narrow band on the anterior margin in the middle, a broad 
median stripe extending in from the posterior margin, connected 
behind with a pair of oblique stripes from the humeral angles, deep 
green. Scutellum yellow, impressed line often dark. Elytra red, 
the costal margin, the sutural margin before the middle, the claval 
suture and a median stripe on corium, green, the appendix black, 
legs and below yellow. The black margin to vertex continued 
across eye and under the margin of pronotum. Sometimes the 
vertex and scutellum are washed with red or the green stripes on 
pronotum coalesce leaving only a spot on either side of the disc, 
red. 
Genitalia; female segment nearly twice as long as the preceding, 
posterior margin acutely rounding back to the lateral margins. 
Male plates long triangular, concavely attenuate, two-thirds the 
length of the pygofers nearly half longer than the ultimate segment. 
Specimens have been examined from Ontario, New 
Hampshire, Vermont, New York, Connecticut, District of 
Columbia, Georgia, Alabama, Tennessee, Florida, Ken- 
tucky, Mississippi, Ohio, Illinois, Iowa, Michigan, Minne- 
sota, Missouri, Nebraska and Kansas. It ranges from 
Canada and Maine to Florida, west to central Nebraska 
and Kansas, and south to Mississippi and Texas and on to 
Mexico and Central America. 
Diedrocephala versuta Say. Plate VI, Figs. 8, 4, and 5. 
This is another very variable species in color markings 
and somewhat so in form. Nearly all gradations between 
these three varieties will be found but the following key 
will readily place all the specimens examined in their cor- 
rect variety. 
A. A black band on anterior margin of vertex versuta Say. 
AA. The anterior margin of vertex without a band, a black spot 
at apex. 
B. A pair of black spots against eye in front sometimes 
wanting, a few fuscous arcs on margin but not reach- 
ing spot at apex. lineiceps Spin. 
