three species which are thus classed the Pellucid 
important when taken according to the amount of injury I 
has been done by them. This locust is, and has been, a common 
structive species in ^California, ^Nevada, and Oregon for a number of 
years: and more recently has occurred as such in Montana. Id 
North Dakota. Minnesota, and .Manitoba. It is found as a com 
species over a much more extended territory than that in which ir 
appeared as a pest, Bince it is found in Washington, Utah, Wyom 
tado, New Mexico, Texas, 8 >uth Dakota, and the u 
tricts of the Middle and New England States. This insect is rath* 
dweller of mountain valleys and high latitudes than of low elevations 
and southern climes. Still, its more recent actions would indicate that 
it is remarkably hardy, and that it quite frequently becomes acclimated 
in new regions. During the past ten years it has worked its way- 
ward troni the valleys of the Gallatin s across the divide Into the valley 
of the Upper Yellowstone, and thence down that stream to its mouth, 
after which it has followed the Missouri to a point not far from Bismarck. 
It has also reached the extreme western part of Nebraska byfollowing 
down the Platte River from the mountain districts of Colorado and 
Wyoming. Its range in British America is probably clear across the 
continent, and as far to the northward as the Peace River at least. 
The insect is fairly represented at Fig. 18. Scudder's description is 
also given herewith-: 
Ash brown; fad- reddish brown ; antenna- yellowish at base, dark brown toward 
tip; a triangular black spot behind eye, the apex touching it: a quadrate trans 1 
black spot on the anterior upper portion of the sides of the pronotum; pronotum 
oetimes with a dark band down the middle; tegmina or wing-coi 
the basal ball' dark brown, with >inall yel- 
iid trans 1 
cially on front border : apical half clear, with 
brown rounded spots, prevalent along 
aing in >i/e toward tin- 
when closed, the upper surface is dark 
a, with a rather broad yellowish vitta 
along cadi angle on the upper surface; 
ga pellucid, with black nervules; _- oral size; 6, anal characters of ma] 
dark brown, the hind femora yello - :iial -» 
Lsb brown, with two or three rather broad diagonal dark browi dark 
at the apex; hind tibiae yellowish brown, reddish toward the tip. with a verj 
generally faint, annulation of dark brown at th<- base; spines tipped 
Length of body, male, L6.25 : : of female, 25 ; spread of wings, male, 3 
female, 
The habits and life-history of this locust aivn.it so well known as 
are those of several others of our species, but can best be compared 
with those of Melanopluh ttpretus, which has so often beeu d- - 
The eggs are laid in similar pod-like sacs in the ground, there b< 
about 25 to 30 to the pod. More than a single batch are laid by e 
female, the intervals between the layings varying from eight day* 
