94 THE ACRIDIIDAE OF MINNESOTA 
femoratus, occur together through the northern part of the State, with 
typical bivittatus, and we have on many occasions observed specimens 
in coitu, in which the sexes had differently colored hind tibiae. The 
mere fact of sexual union, however, is not conclusive, since we have 
taken such differentiated forms as Camnula pellucida (male) and 
PDissosteira carolina (female), and also Stenobothrus curtipennis 
(male) and Gomphocerus clepsydra (female) im coitu. The typical or 
dark-legged form is more common in the southern and western parts 
of the State, while at points in the extreme northern part the red- 
legged is easily the dominant form. 
As has been previously mentioned this species breeds in a variety 
of habitats, but the source of such great swarms as have sometimes 
afflicted the farmers of the western part of the State, lies in large 
tracts of uncultivated soil and especially in such areas as the so-called 
“reverted lands” of the Red River Valley, great tracts, once under 
cultivation but now and for a number of years past lying idle, the old 
stubble densely grown with weeds—a veritable locust paradise and a 
constant source of danger. 
Melanoplus punctulatus Uhl. 
Dark gray, much mottled with fuscous; head and face lighter, and 
similarly mottled; postocular bar commonly broken and _ indistinct, 
especially upon the lateral lobes of the pronotum, which are quite dark 
in coloration. Pronotum subequal, somewhat widened at the metazona, 
somewhat flaring in front to receive the head, varying from luteous- 
testaceous to brownish fuscous. The disk and sides of the metazona 
and the tegmina are heavily maculate with fuscous. Fore and middle 
-femora flecked with fuscous, showing usually a tendency to form a 
triple belting; hind femora similarly marked, with the belts more 
distinctly and uniformly marked, the lower and inner field often 
red; hind tibiae dull red, with a postbasal, obscure, flavous annulus. 
Extremity of male abdomen scarcely clavate and but little upturned; 
the furcula wanting; cerci large and broad, the basal half oblong, the 
apical half expanded to double the width of the base, the upper part 
usually considerably more than the lower. The tegmina are well devel- 
oped and usually surpass the hind femora. The only undoubted 
Minnesota specimens of this insect we have seen are those mentioned 
by Lugger as having come from Gray Cloud Island. We have taken it 
in Iowa, almost on the Minnesota line, in low thickets of willow, 
Salix amygdaloides, while in Nebraska, Bruner has found it in oak 
groves, and in Indiana, Blatchley says of it; . . . in low wooded 
tracts along streams, where it may be noted resting on the trunks of 
