SUBFAMILY OEDIPODINAE 39 
is of a more uniform coloration than any of our other species and the 
wings are uniformly a bright sulphur-yellow in the basal field. The 
body and tegmina are usually sprinkled with fine fuscous dots and at 
the inner margin of the tegmina, especially in males, there is often a 
narrow light-colored area giving the effect of a light dorsal bar when 
the tegmina are closed. There is usually a pale annulation of the hind 
femur near the base and a similarly colored pregenicular annulation. 
The hind tibiae are dusky or blue black with a pale annulus near the 
base. 
This insect 1s especially fond of rather open woodlands and is 
strong and vigorous with a swift and well-sustained flight. It is very 
alert and active and with its effectively protective coloration is not 
easy to capture even where abundant. Like most of the genus it 
stridulates while in flight. It is quite gregarious and frequents certain 
favored localities, being numerous in these spots, while in others of 
apparently similar type it may be entirely absent. We have found it 
quite widely scattered and it is doubtless very generally distributed 
throughout the State. We have taken it at Winona, Albert Lea, Man- 
kato, Worthington, Pipestone, Brown Valley, Fergus Falls, Duluth, 
Mahtomedi, and St. Anthony Park. 
CHORTOPHAGA Sauss. 
The Chortophagas are insects of medium size with somewhat slen- 
der form, more or less distinctly compressed, punctate or finely rugose 
body, coloration usually greenish to brownish and surface more or less 
finely pubescent. Vertex nearly horizontal, triangular, apically trun- 
cate, the lateral carinae well marked though not prominent; median 
carina weak or wanting, often faintly visible on the posterior part of 
the head behind the eye; foveolae shallow, triangular, broadest next 
the eye. Antennae rather short and somewhat flattened. Pronotum 
with disk tectate, constricted near the front and considerably expanded 
posteriorly, its front margin broadly obtuse-angulate, hind margin 
acute-angled although with the point often rounded; median carina 
strong, faintly notched before the middle by the principal sulcus, which 
is nowhere strongly developed; lateral carinae distinct only on the 
anterior part of the metazona and rounded or obsolescent posteriorly, 
more strongly marked in the male. The tegmina are rather narrow 
and exceed the abdomen nearly the whole apical half, especially in 
the discoidal field, membranaceous and traversed by a series of straight 
and nearly parallel veinlets; inner wings nebulous, often more or less 
tinged with yellow, the veins somewhat incrassate. This genus pre- 
4 
