22 
terior lobe also. Tegniina brownish cinereous, tbe anal field sometimes a little 
lighter, the median field enlivened to a greater or less extent, but seldom conspicu- 
ously, by an alternation of blackish and pallid longitudinal quadrate spots. Hind 
femora dirty clay brown with dusky incisures, above with a median and subapical 
dusky or dark fuscous patch; hind tibise red, with black-tipped spines. 
Length of body — male, 24 mm , female, 30 mm ; of antennae— female, 12 mm , male, 
13.5 mm ; of tegmina — male, 21 mm , female, 24 mm ; of hind femora — male, 14 mm , female, 
16.5' un >. 
This locust is in reality a mountain form that occurs at an elevation 
of about 5,000 feet above sea-level, and that frequents the edges of 
valleys and sunny slopes within the semiarid portion of the United 
States. It is met with iu suitable localities in Colorado, Kansas, Ne- 
braska, Wyoming, Utah, Nevada, Idaho, Montana, and the Dakotas, 
along with New Mexico. 
Although the habits and life-history of this insect has never as yet 
been followed out, it is supposed that it does not differ materially from 
that of such other species of the genus as inhabit the same regions, 
and with which we are more or less familiar. In its general appear- 
ance and structure M.foedus is very much like the insect which is known 
by the name of Melanoplus packardi Scudder. In met there is but 
little difference save in color between the two species. 
THE DEVASTATING LOCUST. 
(Melanoplus devastator Scudd.) 
Quite prominent among the destructive species of the country is the 
one known as the Devastating Locust of California. This particular 
species is of about the same size as the lesser migratory one, and has 
c d 
FlG. 10.— Melanoplus devastator: a, large female from California, 1885; b, small female, Reno, Nev., 
1880; c, male, Fort Keogh, Mont., 1880; of, same as c, all natural size (after Trouvelot). 
something of the same general form and appearance. The differences, 
however, can very readily be detected by the description which follows 
and by the illustrations given herewith (Figs. 10 and 11) : 
About the size of M. atlanis, and of the same general appearance. Head moder- 
ately large and broad, with large but not prominent eyes ; vertex somewhat depressed, 
of medium width, quite deeply sulcate in the male, or but gently so in the female; 
frontal costa not very prominent but quite broad, the sides gently divergent below, 
