IOWA ACADEMY OP SCIENCES. 
213 
plates broad at base, rapidly, rounding-ly narrowing to the narrowly pro- 
duced, blacfc-tipped points. Described from numerous specimens. 
Larvae: Tawny yellow, sometimes with light fuscous marking; a bright 
purple spot on either eye in life or in freshly mounted specimens; vertex 
narrow and longer, more acutely pointed than in melscbeimeri; body nar- 
rower more gradually tapering In general color is more intense than in 
melscbeimeri, and approaches inimicus; late or exposed forms sometimes 
distinctly fuscous marked. Living specimens are readily separated by the 
distinct purple spot on the eye. 
This species has been received from Colorado, a,nd has been 
collected at Ames prior to this season. It was first taken this 
year as adults the last week in May, and from then on through 
July. Larv90 were taken abundantly during the second and 
third weeks in July, disappearing by the end; adults were again 
found from the middle of July through August; larvae again 
appearing in August, maturing through September; adults 
from the first of September on through the season. 
It has been found everywhere on Andropogon scoparius, to 
which it seems strictly confined. Mowing during the middle of 
June and again the first half of August, or burning during the 
fall or spring would serve to check this species. 
DELTOCEPHALUS SYLVESTRIS N. SP. 
(PI. XXV, Fig. 4.) 
Form and venation nearly of D. cinereus, but with a longer 
vertex. Form and size of the European repletus, but differing 
in venation. Length, 3.50 mm. Width, 1 mm. 
Vertex twice as long on the middle as next eye, longer than the prono- 
tum, nearly twice longer than wide, acutely pointed; front long, narrow, 
much longer than wide, hardly half wider at ocelli thanon clypeus; clypeus 
strong; lorse broad, prominent. Pronotum long, more than half as long as 
wide; posterior angles strong; elytra long, narrow, nervures distinct, vena- 
tion as in dehilis, outer anteapical long, narrow, distinctly more than half 
the length of the middle one. 
Color: Greenish, marked with pale fuscous and brown; vertex light 
green with two more or less distinct brownish stripes; pronotum green, light 
margined; elytra greenish, nervures light, more or less fuscous marginedi 
never with a whitish cloud, as in cinerms; tergum black at base; front 
fuscous with light arcs, clypeus light; lorae and genm with fuscous and light 
margins. 
Genitalia: Ultimate ventral segment of the female light colored, long, 
slightly narrowing posteriorly; the middle third abruptly produced one-half 
its width, produced part longer at the margin, not notched or rounded as 
in cinereus, distinctly black; male valve broadly triangular, apex pointed; 
plates three times the length of the valve, broad at base, concavely pointed, 
tip divergent, a dark line near the outer margin widened to a spot near 
the middle. 
