23 
reaching to the clypeus, shallowly sulcate ;it the ocellus. Pronotnm hither nhoti 
and broad, slightly expanding on posterior lobe ; median carina prominenl through- 
out, cut about the middle by the last transverse impressed line; lateral carinas also 
quite prominent and forming right angles \\ ith the disk and sides. Tegmina and 
wings reaching beyond the tip of the abdomen in both sexes, but quite variable in 
this respect, the former quite narrow. Last ventral segment of the male abdomen 
somewhat tapering, with the apes gently notched ; super-anal plate triangular, the 
apex acute, middle narrowly grooved one-half its length; marginal apophyses of 
preceding segment about half as long as the supra-anal plate, tapering to a point, tie- 
inner edges attingent for about one-third their length, their outer edge furnished 
with a blunt tooth near the base; cerci slender, equal, straight, nearly lour times as 
long as broad, tin; apex gently sulcate from the outside. Prosternal spine broad, 
stout, the apex rounded. Posterior femora reaching beyond the tip of the abdomen 
iu both sexes. 
General color light testaceous to dull cinereous, more or less varied with brown and 
dull black. Band back of the eyes very obscure, never continuous, hut confined to 
Fig. 11.— Melanoplus devastator. 
enlarged (after Emerton). 
anal characters of male ; a. from above; b, from side: c, frombelow- 
the upper edges of the lateral lobes as two small tapering patches and along the 
impressed lines. Tegmina provided with a row of discal quadrate spots and also 
usually a few others scattered above and below the central field. Posterior femora 
with the usual oblique dark bands; the hind tibiae either dull red or various shades 
of green and blue more or less obscured with brown, usually greenish, the spines 
black. 
Length of body (average specimens) — male, 20 nim , female, 22 mm ; of pronotum — 
male and female, 5 mm ; of tegmina — male and female, 18 mm ; of hind femora, male. 
12 mn \ female, 11.5 mm . 
Melanoplus devastator is known to occur at suitable localities through- 
out the entire region west of the main divide of the Rocky Mountains, 
and even to extend beyond this limit in portions of Montana and Col- 
orado. Notwithstanding this rather extended ranges the insect lias 
never, to my knowledge, been reported in destructive numbers beyond 
the confines of California, Arizona, Nevada, and Oregon. Like several 
Others of our North American insects that are included in this brief 
report, devastator is rather inclined to frequent the country adjacent 
to or among the foot-hills of mountain ranges. It does not usually 
deposit its eggs high up t\w hillsides and mountain slopes, but rather 
seeks for this purpose waste lands low down in the \ alleys that are 
more or less wet. Its growth and transformations are practically the 
same as those of spretus and the other species that have so frequently 
been described. 
