54 BULLETIN NO. 4, DIVISION OF ENTOMOLOGY. 
their movements were in unison, but not extensive, their flights being 
very short. 
The average elevation of Taos Valley is about 7,000 feet. Not a sin- 
gle specimen, young or old, of this insect was observed from the time 
of leaving Poudre Canon to the time of reaching Laramie City on the 
10th of July, nor have any been seen or heard of since. While in-North 
Park, Mr. Capern stated that but few had been observed by him since 1879 
and 1880, when quite a number had hatched in portions of the park ; 
and it was during these years that they were frequently seen in the air, 
floating with the wind. From Laramie and Rock Creek, north, we were 
ever on the lookout for signs of this insect, but failed to see any before 
reaching Fort McKinney. At this place we succeeded in capturing two 
fledged specimens and saw but one or two others. We did not ascer- 
tain much about their past ravages in this part of the country more 
than that, in 1877, they had been seen in the air in great numbers; 
also in 1876, and once or twice previous to this, when they flew in great 
numbers, and occasionally were noticed piled up in heaps upon the snow 
on the mountains where they fell as they became numbed while trying 
to cross the range. Again at Custer’s battle-field we saw two or three 
more among the numerous other species of locusts that abounded 
among the rich grasses of the bottom lands and coulees, as well as 
lower hillsides. At Junction, on the Yellowstone River, none of this 
insect were noticed, though several allied forms were abundant both on 
the river bottoms and among the sage-brush and bunch-grasses back 
among the hills and on the bench-lands. At Livingston, where the 
railroad leaves the Yellowstone Valley, we noticed a great number of 
locusts, which, when I first saw them from the car windows, jumping 
about in the grass, I took for this species. Upon going out, the mistake 
was quickly observed. While there did not appear to be any C. spretus 
among the hosts of locusts, there were quite a large number of Camnula 
atrox, or pellucida. IL also observed several of this species here in the 
vicinity of Bozeman (August 3). I have not, however, been able to 
learn of any damage having been committed by them in this valley 
the present season. Since leaving Bozeman, and while crossing the 
country along the Yellowstone River, we did not observe a single 
specimen of C. spretus, either old or young, in the air or on the 
ground. During past years, however, they were reared in great num- 
bers throughout the National Park and Upper Snake River valleys 
when, at times, they were numerous enough to “almost obscure the 
sun”; at least I was so informed by a Mr. Livermore, who has a ranche 
at Henry’s Lake. 
As to dates and particulars of flights, &c., he was not certain ; 
therefore I can give none of these. As we proceed down the valley of 
Henry’s Fork toward the Snake River there is a great tract of country 
crossed that at times has been the originating center for the great 
swarms that came into Cache Valley and other portions of northern 
