6 REPORT UNITED STATES ENTOMOLOGICAL COMMISSION. 
destroyed this summer one-third of the oats and a third of all the gar- 
den produce. We saw them at this place August 27, flying in the air 
at an elevation of apparently about 500 feet ; their course was down the 
valley, many taking a southwest course. 
Flights of locusts entered Malad Valley late in August from Idaho, 
on the northeast. August 10, locusts were observed on the Snake Iiiver, 
at or near Taylor's Bridge. 
At Franklin, Idaho, none hatched in the spring, but from the middle 
of July until the 30th flights arrived from the north, from the region of 
Market Lake and Port Neuf. I was informed that a large majority of 
those which hatched out last spring went, when fledged, in a northeast 
course (an exception to the ordinary rule, as they usually fly southwest- 
ward), and their progeny are supposed to have returned from their 
breeding-grounds to the northeast. I saw them in abundance August 
27 and 28, at Franklin — a lew in the air. most of them on t ie ground — 
when they were coupling, but not depositing eggs. They were seen 
eating the leaves of the willow, wild rose, and golden-rods. 
Stage passengers from Montana noticed locusts all the way along the 
road from Pleasant Valley to Franklin. They were observed about the 
18th of July in Gentile Valley, between Franklin and Soda Springs. 
They were seen by Mr. L. Bruner at Soda Springs August 18, but no 
eggs were deposited ; about the 25th they flew in southeast and south- 
west directions. 
A few locusts had recently passed over Salt Lake City, and we noticed 
them in the stubble of a recently harvested wheat field at Lake Point, 
20 miles west of the city. According to the Weather Signal report, " vast 
numbers" flew over the city July 20, southward. They were reported to 
have extended this season to San Pete, where they had appeared late in 
August, while the settlements at the eastern portion of Wahsatch County 
were visited, about one-half of the wheat crop having been lost. Locusts 
were also seen by Mr. Bruner at York, 70 miles south of Salt Lake City, 
and also at Provo, September 1. 
Flying swarms of grasshoppers have coine here of late, and we are unable to learn 
from what direction they have come in every instance. However, they were too late 
to damage our small grain and do no great injury to other crops. They are deposit- 
ing their eggs, and promise a crop for the coming season. These insects are subject to- 
die in great numbers, which has often been the means of saving our crops. Even 
now they are dying off quite fast. There is a worm or insect attached to these crea- 
tures sometimes, that is fatal to their vitality. — [A. Christensen, Brigham City, Box 
Elder County, Utah, September 24, 1878. 
From these statements it will be seen that a widely extended but not 
dense swarm, or several swarms, left the Pleasant Valley region on the 
Idaho line about the middle of July and traveled southward, reaching 
Salt Lake City and York by the end of the month. The movement was 
general, the advance guard reaching the southernmost limits of this area 
long before the main body arrived. The emigration beginning so early,, 
the breeding-grounds must have been in Central Montana, directly north 
